David's Astronomy - Astronomical Transients 2025

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Astronomical Transients - 2025

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2024

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Transients
2026

This page documents observations and images of Astronomical Transients (AT) with discovery dates in 2025.
(Note: Supernovae in 2025 are presented on a separate page : SN 2025 )
(Note: Some images may roll over into the following year)

| Galactic Transients | M31 Transients | M33 Transients | Other Extragalactic Transients |

Galactic Transients (2025)
     Name, type, discovery date

AT 2025il - CV Type Transient, RU Peg (2025-01-07)

AT 2025la - Transient (2025-01-11)

AT 2025lc - CV Type Transient (2025-01-10)

AT 2025ld - Transient (2025-01-09) (non-detection)

AT 2025lr - Afterglow Type Transient (2025-01-14) (non-detection)

AT 2025md - CV Type Transient, V1948 Cyg (2025-01-12)

AT 2025oj - CV Type Transient (2025-01-15) (non-detection)

AT 2025yl - CV Type Transient (2025-01-20)

AT 2025esv - Type CV? Transient (2025-03-17)

AT 2025esx - Type CV? Transient (2025-03-17)

AT 2025esy - Type CV? Transient (2025-03-17) (non-detection)

AT 2025euu - Type CV? Transient (2025-03-19)

AT 2025fbb - Type CV? Transient (2025-03-20) (non-detection)

AT 2025fbc - CV Type Transient (2025-03-20) (non-detection)

AT 2025fbd - Type CV? Transient (2025-03-20) (non-detection)

AT 2025fdr - Type CV? Transient (2025-03-21) (non-detection)

AT 2025fma - Type CV? Transient (2025-03-18)

AT 2025fuz - Type CV? Transient (2025-03-25) (non-detection)

AT 2025fwb - Type CV? Transient (2025-03-26)

AT 2025fwg - Transient (2025-03-26) (non-detection)

AT 2025gcz - Type CV? Transient (2025-03-27) (non-detection)

AT 2025ghv - Type CV? Transient (2025-03-31)

AT 2025gnb - Transient (2025-04-02)

AT 2025gsf - Transient (2025-04-04)

AT 2025hwl - CV Type Transient (2025-04-20) (non-detection)

AT 2025img - CV Type Transient (2025-04-26)

AT 2025imo - Type CV? Transient (2025-04-27) (non-detection)

AT 2025jpj - CV Type Transient (2025-05-03)

AT 2025kej - CV Type Transient (2025-05-07)

AT 2025kjp - Type CV? Transient (2025-05-12) (non-detection)

AT 2025kml - Type CV? Transient (2025-05-15) (non-detection)

AT 2025kyb - CV Type Transient (2025-05-18) (non-detection)

AT 2025mmq - Type CV? Transient (2025-05-29) (non-detection)

AT 2025nda - Type CV? Transient (2025-06-08)

AT 2025ndz - Type CV? Transient (2025-06-09) (non-detection)

AT 2025ran - Transient (2025-07-13) (non-detection)

AT 2025rcf - Type CV? Transient (2025-07-13) (non-detection)

AT 2025rut - Type CV? Transient (2025-07-21) (non-detection)

AT 2025sdf - CV Type Transient (2025-07-25)

AT 2025tes - Type CV? Transient (2025-08-03) (non-detection)

AT 2025usz - Type Nova Transient (2025-08-18)

AT 2025vel - Transient (2025-08-23)

AT 2025vob - Type CV? Transient

AT 2025voc - Type CV? Transient (2025-08-26)

AT 2025wbs - Type CV? Transient (2025-08-28) (non-detection)

AT 2025wxe - Type CV? Transient (2025-09-04)

AT 2025xdz - Type CV? Transient (2025-09-09)

AT 2025xea - Type CV? Transient (2025-09-09)

AT 2025abet - Type CV? Transient (2025-10-21) (non-detection)

AT 2025abfn - Transient (2025-10-22)

AT 2025abko - Transient (2025-10-22)  (non-detection)

AT 2025abne - Transient (2025-10-24)

AT 2025absq - Transient (2025-10-23)  (non-detection)

AT 2025abul - Type CV? Transient (2025-10-27)   (non-detection)

AT 2025abwz - Type CV? Transient (2025-10-29)  (non-detection)

AT 2025acrt - Transient (2025-11-07)

AT 2025acse - CV Type Transient (2025-11-07)

AT 2025acsf - Type CV? Transient (2025-11-07)

AT 2025acsh - Type CV? Transient (2025-11-02)  (non-detection)

AT 2025acvr - CV Type Transient (2025-11-08)

AT 2025adxd - Type CV? Transient (2025-11-17)  (non-detection)

AT 2025adxl - Type CV? Transient (2025-11-16)  (non-detection)

AT 2025aefi - CV Type Transient (2025-11-20)

AT 2025aevo - Type CV? Transient (2025-11-25)  (non-detection)

AT 2025afsx - Transient (2025-12-02)  (non-detection)

AT 2025afuu - Type CV? Transient (2025-12-04)  (non-detection)

AT 2025agev - Type CV? Transient (2025-12-03)

AT 2025aglw - Type CV? Transient (2025-12-11)

AT 2025agqo - Type CV? Transient (2025-12-09)

AT 2025agqu - Type CV? Transient (2025-12-11)

AT 2025agtl - Type CV? Transient (2025-12-11)

AT 2025ahek - Type CV? Transient (2025-12-15)

AT 2025ahjt - CV Type Transient (2025-12-18) (non-detection)

AT 2025aiov - Type CV? Transient (2025-12-27) (non-detection)

Extragalactic Transients (2025)
     Name, type, discovery date, host galaxy (if relevant)

M31 Transients

M31N 2025-04a? - Nova (2025-04-16) in M31

M31N 2025-04c? - Nova (2025-04-16) in M31

M31N 2025-04d? - Nova (2025-04-20) in M31

M31N 2025-10a? - Extragalactic Nova (2025-10-17) in M31

M31N 2025-11c? - Extragalatic Nova (2025-11-21) in M31

AT 2025etj - Transient (2025-03-17) in M31

AT 2025keh - Transient (2025-05-07) in M31 (non-detection)

AT 2025kit - Transient (2025-05-08) in M31 (non-detection)

AT 2025kvc - Nova (2025-05-20) in M31 (non-detection)

AT 2025nsa - Extragalactic Nova 2025-06-17) in M31 (non-detection)

AT 2025wwe - EGN Type Transient (2025-09-04) in M31

AT 2025agmm - Transient (2025-12-11) in M31

AT 2025agwf - Transient (2025-12-14) in M31

AT 2025ahch - Transient (2025-12-16) in M31

AT 2025ahzx - EGN Type Transient (2025-12-22) in M31 (non-detection)

M33 Transients

AT 2025mmr - Transient (2025-05-29) in M33 (non-detection)

AT 2025yal - Transient /Candidate Nova (2025-09-20) in M33 (non-detection)

AT 2025yhk - Transient (2025-09-21) in M33 (non-detection)

Other Extragalactic Transients

AT 2025fk - Transient (2025-01-03) in MCG -2-28-37

AT 2025hy - Transient (2025-01-01) in UGC 10913

AT 2025ccz - Transient (2025-02-19) in NGC 2565 (non-detection)

AT 2025gyi - Transient (2025-04-07) in UGC 12293

AT 2025kuz - Transient (2025-05-19) in UGC 1179 (non-detection)

AT 2025lwi - Transient (2025-05-24) in NGC 4395 (non-detection)

AT 2025naw - Unconfirmed Transient (2025-06-07) in NGC 3938 (non-detection)

AT 2025abzu - Type MP Transient (2025-10-30) in NGC 600 (non-detection)

AT 2025acfi - Unconfirmed Transient (2025-10-29) in NGC 4710 (non-detection)

AT 2025addb - Transient (2025-11-10) in NGC 3023

AT 2025adhw - Afterglow Transient (2025-11-13) (non-detection)

AT 2025aesq - UnconfirmedTransient (2025-11-23) in NGC 5448  (non-detection)

AT 2025aigy - Type unconf Transient (2025-12-25) in NGC 100  (non-detection)

AT 2025ajvt - Uncomfirmed Transient (2025-12-30) in NGC 1588

AT 2025ajwu - Afterglow Transient (2025-12-30) (non-detection)

Galactic Transients (2025)

AT 2025il - CV Type Transient, RU Peg (discovered 2025-01-07)

AT 2025il (Pegasus)
AT 2025il (Type: CV) discovered 2025-01-07.343 UT by Gaia
using Gaia Spacecraft Telescope
Alias: Gaia25abx
Discovery Magnitude 11.34 (G-Gaia Filter)
vis Historic Magnitude 12.40 +/- 0.41 SD
Outburst in CV RU Peg
( TNS 2025il | Gaia25abx )

AT 2025il - 2025-01-10 (T+3.5d)
Image below (2025-01-10.815) was taken 3.5 days after discovery of 2025il
Position of reported transient (distinct) is shown by white cross-hairs
Measured Magnitude +10.94 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-01-10 19:37 UT (#1292048-52)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025il - 2025-01-11 (T+4.4d)
Image below (2025-01-11.774) was taken 4.4 days after discovery of 2025il
Position of reported transient (distinct) is shown by white cross-hairs
Measured Magnitude +11.05 (Clear Filter)
Poor quality image (cloud, single frame)

Annotated CCD Image (100% size, linear scale, cropped)
60s exposure (single frame), 3x3 binning, Clear Filter
2025-01-11 18:34 UT (#1293035)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025il - 2025-01-15 (T+8.5d)
Image below (2025-01-15.818) was taken 8.5 days after discovery of 2025il
Position of earlier transient (distinct) is shown by white cross-hairs
Measured Magnitude ? (Clear Filter)
Poor quality image (star trailing). Unable to successfully link.

Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-01-15 19:41 UT (#1295036-39)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025il - 2025-04-02 (T+84.8d)
Image below (2025-04-02.169) was taken 84.8 days after discovery of 2025il
Position of reported transient (distinct) is shown by white cross-hairs
Measured Magnitude +12.41 (Clear Filter)
Likely back within normal range (12.10 to 12.75)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-02 04:06 UT (#1308227-31)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025il - 2025-05-02 (T+114.8d)
Image below (2025-05-02.094) was taken 114.8 days after discovery of 2025il
Position of reported transient (distinct, stable) is shown by white cross-hairs
Measured Magnitude +12.42 (Clear Filter)
Likely back within normal range (12.10 to 12.75)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-05-02 02:17 UT (#1319066-69)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025la - Transient (discovered 2025-01-11)

AT 2025la (Cygnus)
AT 2025la (Type: unk) discovered 2025-01-11.109 UT by Gaia
Alias: Gaia25acy
Discovery Magnitude 16.89 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.34
[ TNS 2025la | Gaia25acy ]

AT 2025la - 2025-01-13 (T+2.7d)

Image below (2025-01-13.812) was taken 2.7 days after discovery of 2025la

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.38 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-13 19:32 UT (#1294029-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025la - 2025-01-15 (T+4.7d)
Image below (2025-01-15.806) was taken 4.7 days after discovery of 2025la
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.51 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-15 19:27 UT (#1295030-33)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025la - 2025-03-18 (T+66.0d)
Image below (2025-03-18.125) was taken 66.0 days after discovery of 2025la
Positon of earlier transient (not visible) is shown by white cross hairs.
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 03:08 UT (#1302182-86)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025la - 2025-03-29 (T+77.0d)
Image below (2025-03-29.101) was taken 77.0 days after discovery of 2025la
Positon of earlier transient (very faint ?) is shown by white cross hairs.
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-29 02:30 UT (#1306130-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025la - Detail, 2025-03-29 (T+77.0d)
Image below (2025-03-29.101) was taken 77.0 days after discovery of 2025la
Positon of earlier transient (not visible) is shown by white cross hairs.
Non-Detection Limiting Magnitude +18.5 (Clear Filter)
The detailed image below when compared with reference images in Aladin
demonstrate that the earlier transient is not visible.
The fuzzy blob just left and above the A2025la location is galaxy WISEA J212348.12+284231.1
The object just to left of the A2025la location is a faint star (and is not AT2025la)

Annotated CCD Image (150% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-29 02:30 UT (#1306130-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - CV Type Transient (discovered 2025-01-10)

AT 2025lc (Cygnus)
AT 2025lc (Type: CV) discovered 2025-01-10.553 UT by Gaia
Alias: Gaia25add
Alerting Magnitude 14.48 (G-Gaia Filter)
vs Historic Magnitude 15.89 +/- 0.61 SD
Outburst in candidate CV
( TNS 2025lc | Gaia25add )

AT 2025lc - 2025-01-15 (T+5.2d)
Image below (2025-01-15.794) was taken 5.2 days after discovery of 2025lc
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +14.30 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-01-15 19:07 UT (#1295022-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-03-15 (T+63.5d)
Image below (2025-03-15.080) was taken 63.5 days after discovery of 2025lc
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +13.69 (Clear Filter)
Appears to be either still be in outburst (from Jan 10th)
or has started a new outburst.

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-15 01:58 UT (#1301164-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-03-29 (T+77.5d)
Image below (2025-03-29.076) was taken 77.5 days after discovery of 2025lc
Position of earlier transient (very faint) is shown by white cross-hairs
Estimated Magnitude +15.9 (Clear Filter)
Star faded and is again at low-state.

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-29 01:53 UT (#1306105-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-04-10 (T+89.6d)
Image below (2025-04-10.126) was taken 89.6 days after discovery of 2025lc
Position of earlier transient (very faint) is shown by white cross-hairs
Estimated Magnitude +16.0 (Clear Filter)
Star is in its low-state.

Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 03:05 UT (#1313163-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-04-29 (T+108.5d)
Image below (2025-04-29.071) was taken 108.5 days after discovery of 2025lc
Position of earlier transient (faint, brightening again) is shown by white cross-hairs
Estimated Magnitude +14.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-29 01:46 UT (#1317057-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-05-17 (T+126.5d)
Image below (2025-05-17.064) was taken 126.5 days after discovery of 2025lc
Position of earlier transient (faint, brightening again) is shown by white cross-hairs
Measured Magnitude +14.35 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 01:35 UT (#1327078-82)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-06-26 (T+167.4d)
Image below (2025-06-26.992) was taken 167.4 days after discovery of 2025lc
Position of earlier transient (very faint, fading) is shown by white cross-hairs
Measured Magnitude +16.51 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-06-26 23:51 UT (#1336012-16)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-07-30 (T+200.5d)
Image below (2025-07-30.035) was taken 200.5 days after discovery of 2025lc
Position of earlier transient (very faint, brightening slightly ?) is shown by white cross-hairs
Estimated Magnitude +15.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-07-30 00:53 UT (#1344047-51)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-09-05 (T+237.6d)
Image below (2025-09-05.108) was taken 237.6 days after discovery of 2025lc
Position of earlier transient (faint) is shown by white cross-hairs
Estimated Magnitude +15.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-09-05 02:39 UT (#1357139-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-10-29 (T+292.4d)
Image below (2025-10-29.951) was taken 292.4 days after discovery of 2025lc
Position of earlier transient (faint but distinct, brightened) is shown by white cross-hairs
Estimated Magnitude +13.39 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-10-29 22:52 UT (#1371022-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2025-12-24 (T+348.2d)

Image below (2025-12-24.799) was taken 348.2 days after discovery of 2025lc

Position of earlier transient (faint) is shown by white cross-hairs
Estimated Magnitude +15.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-12-24 19:14 UT (#1388064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lc - 2026-03-03 (T+416.6d)
Image below (2026-03-03.162) was taken 416.6 days after discovery of 2025lc
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +14.70 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 03:56 UT (#1398221-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ld - Transient (discovered 2025-01-09) (non-detection)

AT 2025ld (Cygnus)
AT 2025ld (Type: unk) discovered 2025-01-09.118 UT by ZTF
using Palomar 1.2m Oschin
Alias: ZTF25aabknlu
Discovery Magnitude 15.67 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 19.75
Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot
( TNS 2025ld )

AT 2025ld - 2025-08-16 (T+219.9d)
Image below (2025-08-16.984) was taken 219.9 days after discovery of 2025ld
Position of earlier transient (faded & no longer visible) is shown by white cross-hairs
Non--Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-16 23:44 UT (#1350047-51)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lr - Afterglow Type Transient (discovered 2025-01-14) (non-detection)

AT 2025lr (Crater)
AT 2025lr (Type: Afterglow) discovered 2025-01-14.316 UT by MASTER
Alias: MASTER OT J110618.40-150641.1, GRB 250114A
Discovery Magnitude 15.9 (? Filter)
vs Prior Non-Detection Limiting Magnitude 19.7
Remarks: GRB 250114A optical counterpart
[ TNS 2025lr ]

AT 2025lr - 2025-03-17 (T+62.7d)
Image below (2025-03-17.995) was taken 62.7 days after discovery of 2025lr
Positon of reported transient (faded & no longer visible) is shown by white circle
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-17 23:56 UT (#1302100-01)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lr - 2025-03-28 (T+73.6d)
Image below (2025-03-28.915) was taken 73.6 days after discovery of 2025lr
Positon of reported transient (faded & no longer visible) is shown by white circle
Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-28 22:01 UT (#1306039-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - CV Type Transient, V1948 Cyg (discovered 2025-01-12)

AT 2025md (Cygnus)
AT 2025md (Type: CV) discovered 2025-01-12.882 UT by Gaia
Alias: Gaia25adm, V1948 Cyg
Alerting Magnitude 13.47 (G-Gaia Filter)
vs Historic Magnitude 14.94 +/- 0.65 SD
Outburst in known CV named V1948 Cyg
( TNS 2025md | Gaia25adm )

AT 2025md - 2025-03-15 (T+61.2d)
Image below (2025-03-15.072) was taken 61.2 days after discovery of 2025md
Position of earlier transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +12.49 ? (Clear Filter)
A very faint star lies directly adjacent to AT2025md
The AT 2025md star seems somewhat fainter than the magnitude measurement (+12.49) suggests
(this view is supported by later image at T+75.2d which shows magnitude +15.49)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-15 01:46 UT (#1301157-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-03-29 (T+75.2d)
Image below (2025-03-29.085) was taken 75.2 days after discovery of 2025md
Position of earlier transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +15.49 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-29 02:05 UT (#1306112-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-04-09 (T+87.1d)
Image below (2025-04-09.962) was taken 87.1 days after discovery of 2025md
Position of earlier transient (faint but distinct, brightening?) is shown by white cross-hairs
Measured Magnitude +14.48 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-09 23:08 UT (#1313052-56)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-04-29 (T+106.2d)
Image below (2025-04-29.080) was taken 106.2 days after discovery of 2025md
Position of earlier transient (faint but distinct, brightening?) is shown by white cross-hairs
Measured Magnitude +14.23 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-29 01:59 UT (#1317064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-05-17 (T+124.1d)
Image below (2025-05-17.005) was taken 124.1 days after discovery of 2025md
Position of earlier transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +15.48 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 00:11 UT (#1327045-49)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-06-12 (T+150.1d)
Image below (2025-06-12.022) was taken 150.1 days after discovery of 2025md
Position of earlier transient (faint, brightening slightly ?) is shown by white cross-hairs
Measured Magnitude +15.34 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-06-12 00:35 UT (#1333033-37)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-07-08 (T+176.1d)
Image below (2025-07-08.016) was taken 176.1 days after discovery of 2025md
Position of earlier transient (distinct, brighted again) is shown by white cross-hairs
Measured Magnitude +13.72 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
60s exposure (single frame), 3x3 binning, Clear Filter
2025-07-08 00:23 UT (#1339014)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-07-30 (T+198.1d)
Image below (2025-07-30.028) was taken 198.1 days after discovery of 2025md
Position of earlier transient (distinct, fading) is shown by white cross-hairs
Measured Magnitude +15.13 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-07-30 00:44 UT (#1344040-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-09-05 (T+235.1d)
Image below (2025-09-05.031) was taken 235.1 days after discovery of 2025md
Position of earlier transient (distinct, fading) is shown by white cross-hairs
Measured Magnitude +15.40 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-09-05 00:48 UT (#1357090-94)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025md - 2025-11-20 (T+312.0d)

Image below (2025-11-20.926) was taken 312.0 days after discovery of 2025md

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.44 (Clear Filter)

Poor quality image (wind shake or poor seeing)

Annotated CCD Image (150% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-11-20 22:16 UT (#1375055-57)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025oj - CV Type Transient (discovered 2025-01-15) (non-detection)

AT 2025oj (Vulpecula)
AT 2025oj (Type: CV) discovered 2025-01-15.040 UT by Gaia
Alias: Gaia25aeh
Alerting Magnitude 15.86 (G-Gaia Filter)
vs Historic Magnitude 18.31 +/- 0.26 SD
Outburst in candidate eclipsing CV ZTF18abmnvsq
( TNS 2025oj | Gaia25aeh )

AT 2025oj - 2025-03-15 (T+59.1d)
Image below (2025-03-15.120) was taken 59.1 days after discovery of 2025oj
Position of earlier transient (not visible) is shown by white cross-hairs
Non Detection Limiting Magnitude +17.0 (Clear Filter)
Star seems to have faded back to within its normal magnitude range (+17.7 to +19.5, Gaia)
Propose to reschedule target using 5 x 180s frames for better chance of detection

Annotated CCD Image (125% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-15 02:55 UT (#1301194-96)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025oj - 2025-03-24 (T+68.1d)
Image below (2025-03-24.115) was taken 68.1 days after discovery of 2025oj
Position of earlier transient (not visible) is shown by white cross-hairs
Non Detection Limiting Magnitude +18.6 (Clear Filter)
Star seems to have faded back to within its normal magnitude range (+17.7 to +19.5, Gaia)

Annotated CCD Image (125% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-24 02:53 UT (#1305077-81)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025oj - 2025-04-03 (T+78.1d)
Image below (2025-04-03.119) was taken 78.1 days after discovery of 2025oj
Position of earlier transient (not visible) is shown by white cross-hairs
Non Detection Limiting Magnitude +17.0 (Clear Filter)
Star seems to have faded back to within its normal magnitude range (+17.7 to +19.5, Gaia)
Star is not visible even after increasing subframe exposure from 60s to 180s

Annotated CCD Image (125% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-03 02:59 UT (#1309157-60)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025yl - CV Type Transient (discovered 2025-01-20)

AT 2025yl (Leo)
AT 2025yl (Type: CV) discovered 2025-01-20.298 UT by MASTER
Alias: MASTER OT J103147.97+085224.6
Discovery Mag 16.83 (cyan-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.47
( TNS 2025yl )

AT 2025yl - 2025-04-10 (T+80.6d)
Image below (2025-04-10.929) was taken 80.6 days after discovery of 2025yl
Position of earlier transient (very faint) is shown by white cross-hairs
Estimated Magnitude +18.6

Annotated CCD Image (100% size, square root scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 22:22 UT (#1314031-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esv - Type CV? Transient (discovered 2025-03-17)

AT 2025esv (Cygnus)
AT 2025esv (Type: CV?) discovered 2025-03-17.910 UT by XOSS
Alias: KATS25F002, TCP J19584776+4119174
Discovery Magnitude 16.93 (Clear Filter)
( TNS 2025esv )

AT 2025esv - 2025-03-20 (T+2.2d)
Image below (2025-03-20.077) was taken 2.2 days after discovery of 2025esv
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.04 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-20 02:00 UT (#1304153-57)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esv - 2025-03-24 (T+6.2d)
Image below (2025-03-24.099) was taken 6.2 days after discovery of 2025esv
Position of reported transient (very faint, fading) is shown by white cross-hairs
Measured Magnitude +17.46 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-24 02:29 UT (#1305070-73)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esv - 2025-04-01 (T+14.2d)
Image below (2025-04-01.112) was taken 14.2 days after discovery of 2025esv
Position of reported transient (very faint) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 02:49 UT (#1307116-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esv - Detail (T+14.2d)
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.59 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 02:49 UT (#1307116-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esx - Type CV? Transient (discovered 2025-03-17)

AT 2025esx (Serpens)
AT 2025esx (Type: CV?) discovered 2025-03-17.918 UT by XOSS
Alias: KATS25F004, TCP J18050011-1130188
Discovery Magnitude 15.68 (Clear Filter)
( TNS 2025esx )

AT 2025esx - 2025-03-24 (T+6.3d)
Image below (2025-03-24.176) was taken 6.3 days after discovery of 2025esx
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.6 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-24 04:20 UT (#1305116-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esx - 2025-04-01 (T+14.2d)
Image below (2025-04-01.160) was taken 14.2 days after discovery of 2025esx
Position of reported transient (barely visible) is shown by white cross-hairs

AT 2025esx - Detail (T+14.2d)
Position of reported transient (barely visible) is shown by white cross-hairs
Estimated Magnitude +18.8 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 03:53 UT (#1307147-48)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esy - Type CV? Transient (discovered 2025-03-17) (non-detection)

AT 2025esy (Serpens)
AT 2025esy (Type: CV?) discovered 2025-03-17.919 UT by XOSS
Alias: KATS25F005, TCP J17265310-1544375
Discovery Magnitude 15.77 (Clear Filter)
( TNS 2025esx )

AT 2025esy - 2025-04-01 (T+14.2d)
Image below (2025-04-01.140) was taken 14.2 days after discovery of 2025esy
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 03:28 UT (#1307137-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esy - Detail (T+14.2d)

Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 03:28 UT (#1307137-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025esy - 2025-04-03 (T+16.2d)
Image below (2025-04-03.144) was taken 16.2 days after discovery of 2025esy
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-03 03:36 UT (#1309169-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025euu - Type CV? Transient (discovered 2025-03-19)

AT 2025euu (Perseus)
AT 2025euu (Type: CV?) discovered 2025-03-19.629 UT by XOSS
Alias: KATS25F011, TCP J03453451+4157182
Discovery Magnitude 13.84 (Clear Filter)
( TNS 2025euu )

AT 2025euu - 2025-03-24 (T+4.4d)
Image below (2025-03-24.035) was taken 4.4 days after discovery of 2025euu
Position of reported transient (barely separable) is shown by white cross-hairs
Estimated Magnitude +15.0 (Clear Filter)

Annotated CCD Image (200% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-24 00:55 UT (#1305034-36)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025euu - 2025-03-28 (T+9.3d)
Image below (2025-03-28.946) was taken 9.3 days after discovery of 2025euu
Position of reported transient (barely separable) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-03-28 22:42 UT (#1306051)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025euu - Detail, 2025-03-28 (T+9.3d)
Position of reported transient (barely separable) is shown by white cross-hairs
Estimated Magnitude +15.2 (Clear Filter)

Annotated CCD Image (200% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-03-28 22:42 UT (#1306051)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025euu - 2025-04-02 (T+13.4d)
Image below (2025-04-02.019) was taken 13.4 days after discovery of 2025euu
Position of reported transient (barely separable) is shown by white cross-hairs

Annotated CCD Image (200% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-02 00:36 UT (#1308092-96)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025euu - 2025-04-03 (T+15.3d)
Image below (2025-04-03.944) was taken 15.3 days after discovery of 2025euu
Position of reported transient (barely separable) is shown by white cross-hairs

Annotated CCD Image (200% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-03 22:47 UT (#1310057-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fbb - Type CV? Transient (discovered 2025-03-20) (non-detection)

AT 2025fbb (Ophiuchus)
AT 2025fbb (Type: CV?) discovered 2025-03-20.899 UT by XOSS
Alias: KATS25F019, TCP J18441632+1114538
Discovery magnitude 16.91 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025fbb )

AT 2025fbb - 2025-09-09 (T+173.1d)
Image below (2025-09-09.949) was taken 173.1 days after discovery of 2025fbb
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magntitude +16.3 (Clear Filter)
Poor quality image (single frame)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-09-09 22:47 UT (#1360045)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fbc - CV Type Transient (discovered 2025-03-20) (non-detection)

AT 2025fbc (Hercules)
AT 2025fbc (Type: CV) discovered 2025-03-20.918 UT by XOSS
Alias: KATS25F020, TCP J18453198+2349289
Alerting Magnitude 16.25 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025fbc )

AT 2025fbc - 2025-04-08 (T+18.2d)
Image below (2025-04-08.069) was taken 18.2 days after discovery of 2025fbc
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.3 (Clear Filter)

Annotated CCD Image (125% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-08 01:46 UT (#1312151-54)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fbd - Type CV? Transient (discovered 2025-03-20) (non-detection)

AT 2025fbd (Sagitta)
AT 2025fbd (Type: CV?) discovered 2025-03-20.922 UT by XOSS
Alias: KATS25F021, TCP J20005674+1747256
Discovery Magnitude 15.79 (G-Gaia Filter)
CV candidate classified by XOSS
( TNS 2025fbd )

AT 2025fbd - 2025-05-10 (T+50.2d)
Image below (2025-05-10.083) was taken 50.2 days after discovery of 2025fbd
Position of earlier transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-10 02:07 UT (#1323081-84)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fdr - Type CV? Transient (discovered 2025-03-21) (non-detection)

AT 2025fdr (Virgo)
AT 2025fdr (Type: CV?) discovered 2025-03-21.653 UT by Isao Endoh
Alias: TCP J12362370+1118570
Discovery Magnitude 13.84 (Clear Filter)
( TNS 2025fdr )

AT 2025fdr (T+16.3d)
Spiral galaxies (NGC 4567 & 4568) in same FOV

Annotated CCD Image (50% size, linear scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-06 23:30 UT (#1311068-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fdr - 2025-04-06 (T+16.3d)
Image below (2025-04-06.974) was taken 16.3 days after discovery of 2025fdr
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.2 (Clear Filter)

Annotated CCD Image (200% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-06 23:30 UT (#1311068-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fma - Type CV? Transient (discovered 2025-03-18)

AT 2025fma (Cepheus)
AT 2025fma (Type: CV?) discovered 2025-03-18.947 UT by XOSS
Alias: KATS25F031, TCP J20412701+6308245
Discovery Mag 16.08 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025fma )

AT 2025fma - 2025-04-11 (T+23.1d)
Image below (2025-04-11.057) was taken 23.1 days after discovery of 2025fma
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +18.25 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-11 01:31 UT (#1314128-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fma - 2025-05-01 (T+43.1d)
Image below (2025-05-01.019) was taken 43.1 days after discovery of 2025fma
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-01 00:35 UT (#1318089-92)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fuz - Type CV? Transient (discovered 2025-03-25) (non-detection)

AT 2025fuz (Virgo)
AT 2025fuz (Type: CV?) discovered 2025-03-25.975 UT by MASTER
from MASTER-SAAO Observatory (South Africa)
Alias: MASTER OT J131625.63-151314.3
Discovery Magnitude 15.9 (Other Filter)
vs Prior Non-Detection Limiting Magnitude 20.7
Suggesting a 4.8+ mag rise
( TNS 2025fuz )

AT 2025fuz - 2025-04-02 (T+8.0d)
Image below (2025-04-02.989) was taken 8.0 days after discovery of 2025fuz
Position of reported transient (not visible) is shown by white cross-hairs
Non-detection Limiting Magnitude +19.4 (Clear Filter)
It would seem that the transient has faded rapidly
(having dropped at least 3.5 mag in just 8 days)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-02 23:52 UT (#1309082-86)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fwb - Type CV? Transient (discovered 2025-03-26)

AT 2025fwb (Lyra)
AT 2025fwb (Type: CV?) discovered 2025-03-26.869 UT by XOSS
Alias: KATS25F035, TCP J19103948+3710117
Discovery Magnitude 15.73 (Clear Filter)
( TNS 2025fwb )

AT 2025fwb - 2025-04-12 (T+16.2d)
Image below (2025-04-12.063) was taken 16.2 days after discovery of 2025fwb
Position of reported transient (very faint) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-12 01:39 UT (#1315124-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fwb - Detail , 2025-04-12 (T+16.2d)
Image below (2025-04-12.063) was taken 16.2 days after discovery of 2025fwb
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.6 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-12 01:39 UT (#1315124-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025fwb - Detail, 2025-09-01 (T+158.2d)
Image below (2025-09-01.020) was taken 158.2 days after discovery of 2025fwb
Position of reported transient (no longer visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.3 (Clear Filter)

AT 2025fwg - Transient (discovered 2025-03-26) (non-detection)

AT 2025fwg (Hercules)
AT 2025fwg (Type: unk) discovered 2025-03-26.967 UT by LAST
Discovery Magnitude 15.96 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 21.84
( TNS 2025fwg )

AT 2025fwg - 2025-04-07 (T+11.1d)
Image below (2025-04-07.040) was taken 11.1 days after discovery of 2025fwg
Position of report transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (50% size, linear scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-07 01:06 UT (#1311151-55)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025gcz - Type CV? Transient (discovered 2025-03-27) (non-detection)

AT 2025gcz (Ursa Major)
AT 2025gcz (Type: CV?) discovered 2025-03-27.887 UT by GOTO
using GOTO-North Telescope
Alias: GOTO25bhx
Discovery Magnitude 15.41 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 18.0
( TNS 2025gcz )

AT 2025gcz - 2025-04-06 (T+10.0d)
Image below (2025-04-06.910) was taken 10.0 days after discovery of 2025gcz
Position of report transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.8 (Clear Filter)

Annotated CCD Image (50% size, linear scale)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-04-06 21:51 UT (#1311032)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - Type CV? Transient (discovered 2025-03-31)

AT 2025ghv (Gemini)
AT 2025ghv (Type: CV?) discovered 2025-03-31.589 UT by XOSS
Alias: PSP25H, TCP J06455595+1210577
Discovery Magnitude 14.88 (Clear Filter)
( TNS 2025ghv )

AT 2025ghv - 2025-04-01 (T+1.3d)
Image below (2025-04-01.899) was taken 1.3 days after discovery of 2025ghv
Position of reported transient (faint) is shown by white cross-hairs

Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 21:42 UT (#1308022-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - 2025-04-01 (T+1.3d)
Image below (2025-04-01.899) was taken 1.3 days after discovery of 2025ghv
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +16.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-01 21:42 UT (#1308022-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - 2025-04-02 (T+2.3d)
Image below (2025-04-02.883) was taken 2.3 days after discovery of 2025ghv
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +15.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-02 21:19 UT (#1309025-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - Detail (T+2.3d)
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +15.5 (Clear Filter)

AT 2025ghv - 2025-04-03 (T+3.3d)
Image below (2025-04-03.897) was taken 3.3 days after discovery of 2025ghv
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +16.0 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-03 21:41 UT (#1310030-34)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - 2025-04-07 (T+7.3d)
Image below (2025-04-07.872) was taken 7.3 days after discovery of 2025ghv
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +16.2 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-07 21:05 UT (#1312006-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - 2025-04-09 (T+9.3d)
Image below (2025-04-09.938) was taken 9.3 days after discovery of 2025ghv
Position of reported transient (faint, fading) is shown by white cross-hairs
Estimated Magnitude +16.8 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-09 22:40 UT (#1313040-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ghv - 2025-04-10 (T+10.4d)
Image below (2025-04-10.941) was taken 10.4 days after discovery of 2025ghv
Position of reported transient (very faint, fading) is shown by white cross-hairs

Annotated CCD Image (175% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 22:41 UT (#1314041-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025gnb - Transient (discovered 2025-04-02) (non-detection)

AT 2025gnb (Gemini)
AT 2025gnb (Type: unk) discovered 2025-04-02.782 UT by MASTER
Alias: MASTER OT J074640.62+173413.1
Discovery Magnitude 16.20 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 19.9
( TNS 2025gnb )

AT 2025gnb - 2025-04-03 (T+1.1d)
Image below (2025-04-03.869) was taken 1.1 days after discovery of 2025gnb
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +16.91 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-03 20:58 UT (#1310015-18)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025gnb - 2025-04-09 (T+7.1d)
Image below (2025-04-09.886) was taken 7.1 days after discovery of 2025gnb
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-09 21:26 UT (#1313009-13)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025gsf - Transient (discovered 2025-04-04)

AT 2025gsf (Canes Venatici)
Alias: In WISEA J121839.40+470627.6
AT 2025gsf (Type: unk) discovered 2025-04-04.174 UT by GEOTS
using 0.36-m f/2 astrograph telescope
Alias: GEOTS-Balaji-2025-001, TCP J12183941+4706273
Discovery Magnitude 16.9 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 17.8
( TNS 2025gsf )

AT 2025gsf - 2025-04-10 (T+5.8d)
Image below (2025-04-10.000) was taken 5.8 days after discovery of 2025gsf
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +16.72 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 00:09 UT (#1313073-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025hwl - CV Type Transient (discovered 2025-04-20) (non-detection)

AT 2025hwl (Ophiuchus)
AT 2025hwl (Type: CV) discovered 2025-04-20.847 UT by XOSS
Alias: KATS25H002, TCP J18225593+1020013
Discovery Magnitude 15.03 (Clear Filter)
CV candidate classified by XOSS
[ The spectrum shows a blue continuum with Balmer absorption lines, except for
Hα (6562.8 Å), which appears filled-up due to emission from the accretion disk.
A likely progenitor is identified in ZTF data with a mean r-band magnitude of 18,
implying a brightness increase of approximately 3 magnitudes. ]
( TNS 2025hwl )

AT 2025hwl - 2025-09-26 (T+159.0d)
Image below (2025-09-26.885) was taken 159.0 days after discovery of 2025hwl
Position of earlier transient (faded & no longer visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-26 21:43 UT (#1367047-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2025hwl on Transients 2025 Page >>

AT 2025img - CV Type Transient (discovered 2025-04-26)

AT 2025img (Leo)
AT 2025img (Type: CV) discovered 2025-04-26.795 UT by MASTER
Alias: MASTER OT J105835.04+054705.5
Discovery Mag 16.2 (Other Filter)
vs Prior Non-Detection Limiting Magnitude 20.1
Likely progenitor is identified as DR3 3816231274612268544
in the GAIA DR3 database (g-mag of 20.428), implying a brightness increase of
approximately 5 magnitudes (Δmag ≈ 5.2). This feature and its spectrum suggest
a cataclysmic variable (CV).
( TNS 2025img )

AT 2025img - 2025-04-30 (T+4.2d)
Image below (2025-04-30.988) was taken 4.2 days after discovery of 2025img
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +15.32 (Clear Filter)
Poor quality image (uneven background / cloud, single frame)

Annotated CCD Image (100% size, linear scale, cropped)
60s exposure (single frame), 3x3 binning, Clear Filter
2025-04-30 23:42 UT (#1318053)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025img - 2025-05-05 (T+9.2d)
Image below (2025-05-05.985) was taken 9.2 days after discovery of 2025img
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +15.86 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-05-05 23:41 UT (#1320042-46)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025img - 2025-05-08 (T+11.2d)
Image below (2025-05-08.013) was taken 11.2 days after discovery of 2025img
Position of earlier transient (faded & no longer visiblet) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-05-08 00:20 UT (#1321022-24)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025imo - Type CV? Transient (discovered 2025-04-27) (non-detection)

AT 2025imo (Cygnus)
AT 2025imo (Type: CV?) discovered 2025-04-27.344 UT by GEOTS
using 0.36-m f/2 astrograph telescope
Alias: GEOTS-Balaji-2025-002, TCP J20504826+5335463
Discovery Magnitude 16.8 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.0
( TNS 2025imo )

AT 2025imo - 2025-09-01 (T+126.7d)
Image below (2025-09-01.062) was taken 126.7 days after discovery of 2025imo
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-01 01:36 UT (#1354131-34)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025jpj - CV Type Transient (discovered 2025-05-03)

AT 2025jpj (Lyra)
AT 2025jpj (Type: CV) discovered 2025-05-03.765 UT by XOSS
Alias: KATS25J001, TCP J18473499+2905579
Discovery Mag 16.39 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025jpj )

AT 2025jpj - 2025-05-08 (T+4.3d)
Image below (2025-05-08.056) was taken 4.3 days after discovery of 2025jpj
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.26 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-08 01:27 UT (#1321070-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025jpj - 2025-09-08 (T+128.1d)
Image below (2025-09-08.900) was taken 128.1 days after discovery of 2025jpj
Position of reported transient (very faint) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.3 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-08 21:43 UT (#1359037-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - CV Type Transient (discovered 2025-05-07)

AT 2025kej (Lyra)
AT 2025kej (Type: CV) discovered 2025-05-07.765 UT by XOSS
Alias: EAST25J001, TCP J18150814+4121534
Discovery Magnitude 14.54 (Clear Filter)
( TNS 2025kej )

AT 2025kej - 2025-05-15 (T+7.3d)
Image below (2025-05-15.054) was taken 7.3 days after discovery of 2025kej
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +15.63 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 01:23 UT (#1325117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-05-16 (T+8.3d)
Image below (2025-05-16.067) was taken 8.3 days after discovery of 2025kej
Position of reported transient (barely visible) is shown by white cross-hairs
Poor quality inage (poor sky transparency, single frame)
Limiting Magnitude +16.0 (approx)

Annotated CCD Image (100% size, linear scale, cropped)
90s exposure (single frame), 3x3 binning, Clear Filter
2025-05-16 01:37 UT (#1326073)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-05-16 (T+9.2d)
Image below (2025-05-16.994) was taken 9.2 days after discovery of 2025kej
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +15.82 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-05-16 23:54 UT (#1327038-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-05-18 (T+10.2d)
Image below (2025-05-18.011) was taken 10.2 days after discovery of 2025kej
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +16.11 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-05-18 00:21 UT (#1328042-46)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-06-12 (T+35.2d)
Image below (2025-06-12.006) was taken 35.2 days after discovery of 2025kej
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-06-12 00:12 UT (#1333020-24)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-07-12 (T+65.3d)
Image below (2025-07-12.042) was taken 65.3 days after discovery of 2025kej
Position of reported transient (not visble) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-07-12 01:05 UT (#1341054-58)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kej - 2025-07-30 (T+83.3d)
Image below (2025-07-30.081) was taken 83.3 days after discovery of 2025kej
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.3 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-07-30 02:01 UT (#1344073-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kjp - Type CV? Transient (discovered 2025-05-12) (non-detection)

AT 2025kjp (Cassiopeia)
AT 2025kjp (Type: CV?) discovered 2025-05-12.836 UT by XOSS
Alias: KATS25J012, TCP J00383155+4956163
Discovery Magnitude 15.21 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025kjp)

AT 2025kjp - 2025-09-13 (T+123.3d)
Image below (2025-09-13.108) was taken 123.3 days after discovery of 2025kjp
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.1 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-13 02:45 UT (#1362170-74)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kjp - Detail (T+123.3d)
Position of earlier transient (not visible) is shown by black cross-hairs

Annotated negative CCD Image (150% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-13 02:45 UT (#1362170-74)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kml - Type CV? Transient (discovered 2025-05-15) (non-detection)

AT 2025kml (Pegasus)
AT 2025kml (Type: CV?) discovered 2025-05-15.899 UT by XOSS
Alias: PSP25I, TCP J22513664+3334177
Discovery Magnitude 16.21 (Clear Filter)
[ TNS 2025kml ]

AT 2025kml - 2025-09-02 (T+109.1d)
Image below (2025-09-02.032) was taken 109.1 days after discovery of 2025kml
Positon of reported transient (not visible) is shown by white cross hairs.
Non-Detection Limiting Magnitude +19.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-02 00:51 UT (#1355027-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kml - 2025-09-05 (T+113.1d)
Image below (2025-09-05.990) was taken 113.1 days after discovery of 2025kml
Positon of reported transient (not visible) is shown by white cross hairs.
Non-Detection Limiting Magnitude +18.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-05 23:55 UT (#1358093-97)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kyb - CV Type Transient (discovered 2025-05-18) (non-detection)

AT 2025kyb (Hercules)
AT 2025kyb (Type: CV) discovered 2025-05-18.071 UT by GOTO
using GOTO-North Telescope
Alias: GOTO25ctd
Discovery Magnitude 16.34 (L-GOTO Filter)
( TNS 2025kyb )

AT 2025kyb - 2025-06-16 (T+29.0d)
Image below (2025-06-16.023) was taken 29.0 days after discovery of 2025kyb
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
2 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-06-16 00:34 UT (#1335046-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kyb - 2025-12-02 (T+198.7d)

Image below (2025-12-02.768) was taken 198.7 days after discovery of 2025kyb

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 18:29 UT (#1382020-24)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025mmq - Type CV? Transient (discovered 2025-05-29) (non-detection)

AT 2025mmq (Cassiopeia)
AT 2025mmq (Type: CV?) discovered 2025-05-29.846 UT by XOSS
Alias: KATS25K022, TCP J00593660+5729229
Discovery Magnitude 15.57 (Clear Filter)
( TNS 2025mmq )

AT 2025mmq - 2025-08-31 (T+94.1d)
Image below (2025-08-31.928) was taken 94.1 days after discovery of 2025mmq
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-31 22:21 UT (#1354019-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025nda - Type CV? Transient (discovered 2025-06-08)

AT 2025nda (Hercules)
AT 2025nda (Type: CV?) discovered 2025-06-08.776 UT by XOSS
Alias: KATS25L001, TCP J18345128+2209168
Discovery magnitude 16.78 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025nda )

AT 2025nda - 2025-09-09 (T+93.2d)
Image below (2025-09-09.943) was taken 93.2 days after discovery of 2025nda
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magntitude +16.9 (Clear Filter)
Poor quality image (single frame)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-09-09 22:38 UT (#1360042)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025nda - 2026-03-03 (T+267.4d)
Image below (2026-03-03.149) was taken 267.4 days after discovery of 2025nda
Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.73 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 03:41 UT (#1398215-18)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ndz - Type CV? Transient (discovered 2025-06-09) (non-detection)

AT 2025ndz (Cygnus)
AT 2025ndz (Type: CV?) discovered 2025-06-09.274 UT by GEOTS
using 0.36-m f/2 astrograph Telescope
Alias: GEOTS-Balaji-2025-004, TCP J19290529+3721280
Discovery Magnitude 16.7 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.0
( TNS 2025ndz )

AT 2025ndz - 2025-09-01 (T+83.8d)
Image below (2025-09-01.038) was taken 83.8 days after discovery of 2025ndz
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-01 01:01 UT (#1354114-17)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ran - Transient (discovered 2025-07-13) (non-detection)

AT 2025ran (Pisces)
AT 2025ran (Type: unk) discovered 2025-07-13.386 UT by ZTF
Alias: ZTF25abbedxh
Discovery Magnitude 16.99 (i-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 19.74
[ TNS 2025ran ]

AT 2025ran - 2025-09-28 (T+77.6d)
Image below (2025-09-28.972) was taken 77.6 days after discovery of 2025ran
Positon of earlier transient (not visible) is shown by white cross hairs.
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-28 23:25 UT (#1368117-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025rcf - Type CV? Transient (discovered 2025-07-13) (non-detection)

AT 2025rcf (Cygnus)
AT 2025rcf (Type: CV?) discovered 2025-07-13.775 UT by XOSS
Alias: KATS25N013, TCP J20581282+2955099
Discovery magnitude 16.53 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025rcf )

AT 2025rcf - 2025-09-10 (T+58.3d)
Image below (2025-09-10.040) was taken 58.3 days after discovery of 2025rcf
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magntitude +16.2 (Clear Filter)
Poor quality image (bright moonlit sky background & low SN)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-10 01:07 UT (#1360121-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025rut - Type CV? Transient (discovered 2025-07-21) (non-detection)

AT 2025rut (Hercules)
AT 2025rut (Type: CV?) discovered 2025-07-21.779 UT by XOSS
Alias: KATS25O007, TCP J18565217+1417112
Discovery Magnitude 16.64 (Clear Filter)
( TNS 2025rut )

AT 2025rut - 2025-08-31 (T+41.2d)
Image below (2025-08-31.994) was taken 41.2 days after discovery of 2025rut
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.8(Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-01 00:01 UT (#1354064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025sdf - CV Type Transient (discovered 2025-07-25)

AT 2025sdf (Ophiuchus)
AT 2025sdf (Type: CV) discovered 2025-07-25.520 UT by Tadashi Kojima
using Canon EOS 6D digital camera + 300mm f/2.8 lens.
Alias: TCP J16271026-1030020
Discovery Magnitude 13.8 (Clear Filter)
( TNS 2025sdf )

AT 2025sdf - 2025-08-25 (T+31.4d)
Image below (2025-08-25.882) was taken 31.4 days after discovery of 2025sdf
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +15.85 (Clear Filter)
Poor quality image (not centered due to cloud, single frame)

Annotated CCD Image (100% size, linear scale, cropped)
60s exposure (single frame), 3x3 binning, Clear Filter
2025-08-25 21:10 UT (#1351007)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025sdf - 2026-02-28 (T+217.7d)
Image below (2026-02-28.215) was taken 217.7 days after discovery of 2025sdf
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-02-28 05:12 UT (#1396270-74)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025tes - Type CV? Transient (discovered 2025-08-03) (non-detection)

AT 2025tes (Taurus)
AT 2025tes (Type: CV?) discovered 2025-08-03.843 UT by Ziyang Mai
taken with 80mm F/6 lens + Nikon D610 camera with broadband clear filter
Discovery Magnitude 14.6 (Clear Filter)
Nothing brighter than Mag 16 CV is visible at this position on DSS.
Possible CV in Tau.
( TNS 2025tes )

AT 2025tes - 2025-11-01 (T+90.1d)
Image below (2025-11-01.944) was taken 90.1 days after discovery of 2025tes
Position of reported transient (not visible, likely faded) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.3 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-01 22:46 UT (#1372069-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025sdf - 2026-01-16 (T+174.7d)
Image below (2026-01-16.265) was taken 174.7 days after discovery of 2025sdf
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-01-16 06:24 UT (#1391326-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025usz - Type Nova Transient (discovered 2025-08-18)

AT 2025usz (Pegasus)
AT 2025usz (Type: Nova) discovered 2025-08-18.305 UT by ZTF
Alias: ZTF25abjnifk, TCP J22135399+3015357
Discovery Magnitude 16.64 (Clear Filter)
( TNS 2025usz )

AT 2025usz - 2025-09-01 (T+13.8d)
Image below (2025-09-01.118) was taken 13.8 days after discovery of 2025usz
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +15.76 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-01 02:58 UT (#1354165-69)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025usz - 2025-09-05 (T+18.7d)
Image below (2025-09-05.974) was taken 18.7 days after discovery of 2025usz
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +15.99 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-05 23:30 UT (#1358087-90)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025usz - 2025-09-08 (T+21.6d)
Image below (2025-09-08.938) was taken 21.6 days after discovery of 2025usz
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +16.05 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-08 22:39 UT (#1359055-59)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025usz - 2025-09-12 (T+25.7d)
Image below (2025-09-12.958) was taken 25.7 days after discovery of 2025usz
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +16.39 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-12 23:06 UT (#1362074-78)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025usz - 2025-09-17 (T+29.7d)
Image below (2025-09-17.009) was taken 29.7 days after discovery of 2025usz
Position of reported transient (very faint, fading) is shown by white cross-hairs
Estimated Magnitude / Limiting Magnitude +17.1 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-17 00:16 UT (#1363149-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025vel - Transient (discovered 2025-08-23)

AT 2025vel (Auriga)
AT 2025vel (Type: unk) discovered 2025-08-23.402 UT by GEOTS
using 0.36-m f/2 astrograph Telescope
Alias: GEOTS-Balaji-2025-08
Discovery Magnitude 16.8 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude (18.0)
CV Candidate
( TNS 2025vel )

AT 2025vel - 2025-09-06 (T+13.7d)
Image below (2025-09-06.124) was taken 13.7 days after discovery of 2025vel
Position of reported transient (faint, fading) is shown by white cross-hairs
Non-Detection Limiting Magnitude +16.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-06 03:08 UT (#1358180-84)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025vel - 2025-10-30 (T+67.6d)
Image below (2025-10-30.036) was taken 67.6 days after discovery of AT 2025vel
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.98 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-10-30 00:57 UT (#1371086-88)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025vob - Type CV? Transient

AT 2025vob (Cygnus)
AT 2025vob (Type: CV?) discovered 2025-08-26.779 UT by XOSS
Alias: KATS25Q007, TCP J21593251+5118352
Discovery Magnitude 16.26 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025vob )

AT 2025vob - 2025-09-08 (T+13.2d)
Image below (2025-09-08.972) was taken 13.2 days after discovery of 2025vob
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.40 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-08 23:28 UT (#1359078-82)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025voc - Type CV? Transient (discovered 2025-08-26)

AT 2025voc (Cygnus)
AT 2025voc (Type: CV?) discovered 2025-08-26.818 UT by XOSS
Alias: KATS25Q008, TCP J21333279+3704019
Discovery Magnitude 16.92 (Clear Filter)
( TNS 2025voc )

AT 2025voc - 2025-09-05 (T+9.3d)
Image below (2025-09-05.078) was taken 9.3 days after discovery of 2025voc
Position of earlier transient (very faint) is shown by white cross-hairs
Estimated Magnitude +18.7 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-05 02:01 UT (#1357117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025wbs - Type CV? Transient (discovered 2025-08-28)

AT 2025wbs (Hercules)
AT 2025wbs (Type: CV?) discovered 2025-08-28.608 UT by XOSS
Alias: KATS25Q010, TCP J16441031+2217102
Discovery Magnitude 16.11 (Clear Filter)
CV candidate classified by XOSS
( TNS 2025wbs )

AT 2025wbs - 2025-09-04 (T+7.4d)
Image below (2025-09-04.980) was taken 7.4 days after discovery of 2025wbs
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-04 23:37 UT (#1357063-66)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025wxe - Type CV? Transient (discovered 2025-09-04)

AT 2025wxe (Cepheus)
AT 2025wxe (Type: CV?) discovered 2025-09-04.726 UT by XOSS
Alias: KATS25R005, TCP J21243104+6423583
Discovery Magnitude 15.67 (Clear Filter)
( TNS 2025wxe )

AT 2025wxe - 2025-09-26 (T+21.3d)
Image below (2025-09-26.074) was taken 21.3 days after discovery of 2025wxe
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.4 (Clear Filter)

Annotated CCD Image (125% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-26 01:55 UT (#1366137-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xdz - Type CV? Transient (discovered 2025-09-09)

AT 2025xdz (Aquila)
AT 2025xdz (Type: CV?) discovered 2025-09-09.615 UT by Ziyang Mai
using C8HD F/7 Telescope
Discovery Magnitude 16.65 (Clear Filter)
Possible CV in Aql.
( TNS 2025xdz )

AT 2025xdz - 2025-09-12 (T+3.3d)
Image below (2025-09-12.898) was taken 3.3 days after discovery of 2025xdz
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +14.86 ? (Clear Filter)

Annotated CCD Image (125% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-12 21:42 UT (#1362041-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xdz - 2025-09-16 (T+7.3d)
Image below (2025-09-16.947) was taken 7.3 days after discovery of 2025xdz
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +15.7 (Clear Filter)
Poor quality image (cloud, single frame)

Annotated CCD Image (125% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-09-16 22:44 UT (#1363103)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xdz - 2025-09-17 (T+8.3d)
Image below (2025-09-17.956) was taken 8.3 days after discovery of 2025xdz
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +15.8 (Clear Filter)
Poor quality image (cloud, single frame)

Annotated CCD Image (125% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-09-17 22:57 UT (#1364033)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xdz - 2025-09-25 (T+16.3d)
Image below (2025-09-25.897) was taken 16.3 days after discovery of 2025xdz
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.2 (Clear Filter)

Annotated CCD Image (125% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-25 21:41 UT (#1366054-58)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xea - Type CV? Transient (discovered 2025-09-09)

AT 2025xea (Aquila)
AT 2025xea(Type: CV?) discovered 2025-09-09.637 UT by Ziyang Mai
using C8HD F/7 Telescope
Discovery magnitude 16.35 (Clear Filter)
Possible CV in Aql
( TNS 2025xea )

AT 2025xea - 2025-09-16 (T+7.3d)
Image below (2025-09-16.919) was taken 7.3 days after discovery of 2025xea
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +17.48 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-16 22:11 UT (#1363076-79)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025xea - 2025-09-25 (T+16.3d)
Image below (2025-09-25.913) was taken 16.3 days after discovery of 2025xea
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +16.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-25 22:03 UT (#1366061-65)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abet - Type CV? Transient (discovered 2025-10-21) (non-detection)

AT 2025abet (Pegasus)
AT 2025abet (Type: CV?) discovered 2025-10-21.866 UT by LAST
using Large Array Survey Telescope Telescope

Discovery Magnitude 15.71 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 19.67 (Clear Filter)

( TNS 2025abet )

AT 2025abet - 2025-11-25 (T+35.0d)

Image below (2025-11-25.855) was taken 35.0 days after discovery of 2025abet

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-25 20:39 UT (#1378076-80)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abfn - Transient (discovered 2025-10-22)

AT 2025abfn (Orion)
AT 2025abfn (Type: unk) discovered 2025-10-22.360 UT by ZTF
Alias: ZTF25abzcwci
Discovery Magnitude 16.44 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 20.29
( TNS 2025abfn )

AT 2025abfn - 2025-10-30 (T+7.7d)
Image below (2025-10-30.109) was taken 7.7 days after discovery of 2025abfn
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-10-30 02:42 UT (#1371117-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abko - Transient (discovered 2025-10-22) (non-detection)

AT 2025abko (Perseus)
AT 2025abko (Type: unk) discovered 2025-10-22.174 UT by GEOTS
Alias: GEOTS-Balaji-2025-012

Discovery Magnitude 16.70 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.00 (Clear Filter)
Discovered in Per using 14" f/2.0 Astrograph at Golden Ears Observatory (MPC code U55).
Outburst of a known UGSU MASTER OT J024847.86+501239.7

( TNS 2025abko )

AT 2025abko - 2025-11-27 (T+36.7d)

Image below (2025-11-27.829) was taken 36.7 days after discovery of 2025abko

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-27 20:02 UT (#1379078-81)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abne - Transient (discovered 2025-10-24)

AT 2025abne (Orion)
AT 2025abne (Type: unk) discovered 2025-10-24.459 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25abztjzq
Discovery Magnitude 14.28 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 21.13
( TNS 2025abne )

AT 2025abne - 2025-11-02 (T+8.6d)
Image below (2025-11-02.013) was taken 8.6 days after discovery of 2025abne
Position of reported transient (not visible) is shown by white cross-hairs
Measured Magnitude +16.29 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-02 00:21 UT (#1372101-02)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abne - 2025-11-26 (T+32.6d)

Image below (2025-11-26.024) was taken 32.6 days after discovery of 2025abne

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude + (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-11-26 00:35 UT (#1378146)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025absq - Transient (discovered 2025-10-23) (non-detection)

AT 2025absq (Cassiopeia)
AT 2025absq (Type: unk) discovered 2025-10-23.635 UT by MASTER
Alias: MASTER OT J010405.54+500734.9

Discovery Magnitude 16.90 (Other Filter)
vs Prior Non-Detection Limiting Magnitude 21.00 (Other Filter)

( TNS 2025absq )

AT 2025absq - 2025-11-24 (T+32.2d)

Image below (2025-11-24.878) was taken 32.2 days after discovery of 2025absq

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-24 21:13 UT (#1377030-34)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025absq - 2025-11-30 (T+38.2d)

Image below (2025-11-30.841) was taken 38.2 days after discovery of 2025absq

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-30 20:20 UT (#1381086-90)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abul - Type CV? Transient (discovered 2025-10-27) (non-detection)

AT 2025abul (Cygnus)
AT 2025abul (Type: CV?) discovered 2025-10-27.683 UT by XOSS
Alias: KATS25U025, TCP J21314142+4111541

Discovery Magnitude 16.77 (Clear Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25u025.html

( TNS 2025abul )

AT 2025abul - 2025-12-02 (T+36.2d)

Image below (2025-12-02.898) was taken 36.2 days after discovery of 2025abul

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 21:40 UT (#1382125-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abul - 2026-03-04 (T+127.4d)
Image below (2026-03-04.059) was taken 127.4 days after discovery of 2025abul
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-04 01:34 UT (#1399199-203)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abwz - Type CV? Transient (discovered 2025-10-29) (non-detection)

AT 2025abwz (Auriga)
AT 2025abwz (Type: CV?) discovered 2025-10-29.868 UT by XOSS
Alias: KATS25U026, TCP J05163749+4047421

Discovery Magnitude 16.87 (Clear Filter)

( TNS 2025abwz )

AT 2025abwz - 2025-11-26 (T+27.2d)

Image below (2025-11-26.058) was taken 27.2 days after discovery of 2025abwz

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-26 01:32 UT (#1378163-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acrt - Transient (discovered 2025-11-07)

AT 2025acrt (Hydra)
AT 2025acrt (Type: unk) discovered 2025-11-07.220 UT by GOTO
using GOTO-North Telescope
Alias: GOTO25jpt, ZTF25accynmt

Discovery Magnitude 14.45 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 19.20 (L-GOTO Filter)
This transient was discovered with the assistance of the GOTO Kilonova
Seekers Citizen Scientists on Zooniverse.
The candidate was flagged by volunteers: Rachel A. Ford, Henryk Krawczyk,
Antonio Pasqua, M.T. Mazzucato, Ciro Sirio Perrella

( TNS 2025acrt )

AT 2025acrt - 2025-11-29 (T+22.0d)

Image below (2025-11-29.172) was taken 22.0 days after discovery of 2025acrt

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.46 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-29 04:17 UT (#1380089-93)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acrt - 2025-12-03 (T+25.9d)

Image below (2025-12-03.088) was taken 25.9 days after discovery of 2025acrt

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.62 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-03 02:14 UT (#1382239-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acrt - 2026-03-03 (T+116.7d)
Image below (2026-03-03.964) was taken 116.7 days after discovery of 2025acrt
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.1 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 23:11 UT (#1399134-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acse - CV Type Transient (discovered 2025-11-07)

AT 2025acse (Cygnus)
AT 2025acse (Type: CV) discovered 2025-11-07.647 UT by XOSS
Alias: KATS25V004, TCP J21314718+3825463

Discovery Magnitude 14.70 (Clear Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25v004.html

( TNS 2025acse )

AT 2025acse - 2025-11-28 (T+21.3d)

Image below (2025-11-28.975) was taken 21.3 days after discovery of 2025acse

Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.72 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-28 23:33 UT (#1380028-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acse - 2025-12-02 (T+25.2d)

Image below (2025-12-02.822) was taken 25.2 days after discovery of 2025acse

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.51 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 19:50 UT (#1382065-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acse - 2026-03-03 (T+115.4d)
Image below (2026-03-03.088) was taken 115.4 days after discovery of 2025acse
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.6 (Clear Filter)
Poor quality image (poor seeing)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 02:15 UT (#1398176-80)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acsf - Type CV? Transient (discovered 2025-11-07)

AT 2025acsf (Lacerta)
AT 2025acsf (Type: CV?) discovered 2025-11-07.681 UT by XOSS
Alias: KATS25V005, TCP J22003659+4128383

Discovery Magnitude 16.87 (Clear Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25v005.html

( TNS 2025acsf )

AT 2025acsf - 2025-12-02 (T+25.2d)

Image below (2025-12-02.928) was taken 25.2 days after discovery of 2025acsf

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +16.85 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 22:25 UT (#1382153-57)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acsf - 2026-03-03 (T+115.5d)
Image below (2026-03-03.203) was taken 115.5 days after discovery of 2025acsf
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.27 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 05:00 UT (#1398261-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acsh - Type CV? Transient (discovered 2025-11-02) (non-detection)

AT 2025acsh (Aquila)
AT 2025acsh (Type: CV?) discovered 2025-11-02.612 UT by XOSS
Alias: KATS25V007, TCP J20105344+1431445

Discovery Magnitude 15.02 (Clear Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25v007.html

( TNS 2025acsh )

AT 2025acsh - 2025-12-02 (T+30.2d)

Image below (2025-12-02.856) was taken 30.2 days after discovery of 2025acsh

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 20:41 UT (#1382090-93)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acvr - CV Type Transient (discovered 2025-11-08)

AT 2025acvr (Ursa Major)
AT 2025acvr (Type: CV) discovered 2025-11-08.492 UT by ZTF
Alias: ZTF25acdhetm, GOTO25jsd

Discovery Magnitude 15.26 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 20.31 (r-ZTF Filter)

( TNS 2025acvr )

AT 2025acvr - 2025-11-21 (T+12.7d)

Image below (2025-11-21.144) was taken 12.7 days after discovery of 2025acvr

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.13 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-21 03:36 UT (#1375245-49)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acvr - 2025-11-25 (T+16.7d)

Image below (2025-11-25.155) was taken 16.7 days after discovery of 2025acvr

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.41 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-11-25 03:43 UT (#1377065)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acvr - 2025-11-26 (T+17.7d)

Image below (2025-11-26.144) was taken 17.7 days after discovery of 2025acvr

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.59 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-26 03:37 UT (#1378207-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acvr - 2025-12-02 (T+24.5d)

Image below (2025-12-02.982) was taken 24.5 days after discovery of 2025acvr

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 23:42 UT (#1382184-88)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acvr - 2025-12-13 (T+34.6d)

Image below (2025-12-13.081) was taken 34.6 days after discovery of 2025acvr

Position of reported transient (very faint/barely visible) is shown by white cross-hairs
Estimated Magnitude +19.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-13 02:06 UT (#1384174-78)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adxd - Type CV? Transient (discovered 2025-11-17) (non-detection)

AT 2025adxd (Cygnus)
AT 2025adxd (Type: CV?) discovered 2025-11-17.443 UT by MASTER
Alias: MASTER OT J214536.14+320857.8
Discovery Magnitude 16 (Other- Filter)
vs Prior Non-Detection Limiting Magnitude 17.3 (Other- Filter)
UG https://vsx.aavso.org/index.php?view=detail.top&oid=2345294
( TNS 2025adxd )

AT 2025adxd - 2026-03-04 (T+106.7d)
Image below (2026-03-04.151) was taken 106.7 days after discovery of 2025adxd
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-04 03:46 UT (#1399260-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adxl - Type CV? Transient (discovered 2025-11-16) (non-detection)

AT 2025adxl (Perseus)
AT 2025adxl (Type: CV?) discovered 2025-11-16.817 UT by XOSS
Alias: KATS25W001, TCP J03053214+4548185

Discovery Magnitude 16.73 (Clear Filter)

( TNS 2025adxl )

AT 2025adxl - 2025-11-26 (T+9.2d)

Image below (2025-11-26.006) was taken 9.2 days after discovery of 2025adxl

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-26 00:17 UT (#1378138-42)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adxl - 2025-11-27 (T+11.1d)

Image below (2025-11-27.892) was taken 11.1 days after discovery of 2025adxl

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.1 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-27 21:30 UT (#1379128-31)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adxl - 2025-11-30 (T+14.1d)

Image below (2025-11-30.888) was taken 14.1 days after discovery of 2025adxl

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.6 (Clear Filter)

Annotated CCD Image (175% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-11-30 21:19 UT (#1381102)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aefi - CV Type Transient (discovered 2025-11-20)

AT 2025aefi (Auriga)
AT 2025aefi (Type: CV) discovered 2025-11-20.006 UT by LAST
using Large Array Survey Telescope Telescope

Discovery Magnitude 15.84 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 20.83 (Clear Filter)
CV?

( TNS 2025aefi )

AT 2025aefi - 2025-12-03 (T+13.0d)

Image below (2025-12-03.051) was taken 13.0 days after discovery of 2025aefi

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +18.26 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-03 01:20 UT (#1382219-22)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aefi - 2025-12-16 (T+26.1d)

Image below (2025-12-16.087) was taken 26.1 days after discovery of 2025aefi

Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.3 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 02:11 UT (#1385203-06)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aevo - Type CV? Transient (discovered 2025-11-25) (non-detection)

AT 2025aevo (Monoceros)
AT 2025aevo (Type: CV?) discovered 2025-11-25.929 UT by XOSS
Alias: KATS25W009, TCP J07175565-0926546

Discovery Magnitude 16.80 (Clear Filter)

( TNS 2025aevo )

AT 2025aevo - 2025-12-16 (T+20.1d)

Image below (2025-12-16.023) was taken 20.1 days after discovery of 2025aevo

Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 00:42 UT (#1385168-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025afsx - Transient (discovered 2025-12-02) (non-detection)

AT 2025afsx (Hydra)
AT 2025afsx (Type: unk) discovered 2025-12-02.070 UT by MASTER
Alias: MASTER OT J083020.05-040616.6, BGEM J083020.10-040615.5, ZTF25acgbcph
Discovery Magnitude 16.8 (Other- Filter)
vs Prior Non-Detection Limiting Magnitude 20 (Other- Filter)
>7 mag amplitude outburst
( TNS 2025afsx )

AT 2025afsx - 2026-02-17 (T+77.9d)
Image below (2026-02-17.944) was taken 77.9 days after discovery of 2025afsx
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-17 22:46 UT (#1394080-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025afsx - 2026-03-03 (T+91.9d)
Image below (2026-03-03.942) was taken 91.9 days after discovery of 2025afsx
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-03 22:42 UT (#1399124-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025afuu - Type CV? Transient (discovered 2025-12-04) (non-detection)

AT 2025afuu (Draco)
AT 2025afuu (Type: CV?) discovered 2025-12-04.490 UT by Ziyang Mai
Discovery Magnitude 15.37 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude ( Filter)
Possible CV in Dra.
( TNS 2025afuu )

AT 2025afuu - 2026-02-28 (T+85.6d)
Image below (2026-02-28.128) was taken 85.6 days after discovery of 2025afuu
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-28 03:13 UT (#1396185-89)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agev - Type CV? Transient (discovered 2025-12-03)

AT 2025agev (Auriga)
AT 2025agev (Type: CV?) discovered 2025-12-03.874 UT by MASTER
Alias: MASTER OT J063640.41+331826.0

Discovery Magnitude 16.50 (Other Filter)
vs Prior Non-Detection Limiting Magnitude 19.80 (Other Filter)

( TNS 2025agev )

AT 2025agev - 2025-12-16 (T+12.2d)

Image below (2025-12-16.046) was taken 12.2 days after discovery of 2025agev

Position of reported transient (very faint ) is shown by white cross-hairs
Estiimated Magnitude +18.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-12-16 01:06 UT (#1385183)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aglw - Type CV? Transient (discovered 2025-12-11)

AT 2025aglw (Puppis)
AT 2025aglw (Type: CV?) discovered 2025-12-11.875 UT by XOSS
Alias: KATS25X008
Discovery Magnitude 16.27 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude ( Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25x008.html
( TNS 2025aglw )

AT 2025aglw - 2026-01-14 (T+33.2d)
Image below (2026-01-14.038) was taken 33.2 days after discovery of 2025aglw
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-14 01:03 UT (#1390195-99)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqo - Type CV? Transient (discovered 2025-12-09)

AT 2025agqo (Camelopardalis)
AT 2025agqo (Type: CV?) discovered 2025-12-09.854 UT by XOSS
Alias: KATS25X012

Discovery Magnitude 16.53 (Clear Filter)

( TNS 2025agqo )

AT 2025agqo - 2025-12-16 (T+6.2d)

Image below (2025-12-16.069) was taken 6.2 days after discovery of 2025agqo

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.24 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 01:44 UT (#1385195-97)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqo - 2025-12-19 (T+10.1d)

Image below (2025-12-19.928) was taken 10.1 days after discovery of 2025agqo

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +17.65 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 22:27 UT (#1387130-34)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqo - 2026-01-15 (T+37.0d)
Image below (2026-01-15.819) was taken 37.0 days after discovery of 2025agqo
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-15 19:48 UT (#1391033-37)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqu - Type CV? Transient (discovered 2025-12-11)

AT 2025agqu (Canis Minor)
AT 2025agqu (Type: CV?) discovered 2025-12-11.897 UT by XOSS
Alias: KATS25X013

Discovery Magnitude 16.47 (Clear Filter)

( TNS 2025agqu )

AT 2025agqu - 2025-12-16 (T+4.2d)

Image below (2025-12-16.054) was taken 4.2 days after discovery of 2025agqu

Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +17.07 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 01:27 UT (#1385187-91)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqu - 2025-12-16 (T+5.1d)

Image below (2025-12-16.960) was taken 5.1 days after discovery of 2025agqu

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.32 ? (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 23:10 UT (#1386185-88)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqu - 2025-12-19 (T+8.1d)

Image below (2025-12-19.983) was taken 8.1 days after discovery of 2025agqu

Position of earlier transient (very faiint) is shown by white cross-hairs
Measured Magnitude +17.53 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 23:42 UT (#1387168-70)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqu - 2025-12-25 (T+13.2d)

Image below (2025-12-25.075) was taken 13.2 days after discovery of 2025agqu

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +18.13 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-25 01:57 UT (#1388246-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agqu - 2026-01-15 (T+35.0d)
Image below (2026-01-15.917) was taken 35.0 days after discovery of 2025agqu
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-15 22:09 UT (#1391108-12)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agtl - Type CV? Transient (discovered 2025-12-11)

AT 2025agtl (Monoceros)
Alias: In WISEA J013048.97-133845.1
AT 2025agtl (Type: CV?) discovered 2025-12-11.859 UT by XOSS
Alias: KATS25X014

Discovery Magnitude 15.49 (Clear Filter)

( TNS 2025agtl )

AT 2025agtl - 2025-12-20 (T+8.2d)

Image below (2025-12-20.071) was taken 8.2 days after discovery of 2025agtl

Position of earlier transient faint) is shown by white cross-hairs
Estimated Magnitude +16.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-20 01:49 UT (#1387213-16)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agtl - 2026-01-14 (T+33.2d)
Image below (2026-01-14.052) was taken 33.2 days after discovery of 2025agtl
Position of earlier transient (faded & no longer visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-14 01:24 UT (#1390203-07)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agtl - 2026-02-26 (T+77.1d)
Image below (2026-02-26.966) was taken 77.1 days after discovery of 2025agtl
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.1 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2026-02-26 23:11 UT (#1395163)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ahek - Type CV? Transient (discovered 2025-12-15)

AT 2025ahek (Cygnus)
AT 2025ahek (Type: CV?) discovered 2025-12-15.502 UT by Ziyang Mai
Discovery Magnitude 16.78 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude ( Filter)
Possible CV in Cyg.
( TNS 2025ahek )

AT 2025ahek - 2026-02-28 (T+75.5d)
Image below (2026-02-28.995) was taken 75.5 days after discovery of 2025ahek
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-01 00:02 UT (#1397055-59)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ahjt - CV Type Transient (discovered 2025-12-18) (non-detection)

AT 2025ahjt (Cancer)
AT 2025ahjt (Type: CV) discovered 2025-12-18.003 UT by LAST
Discovery Magnitude 16.59 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 19.2 (Clear- Filter)
( TNS 2025ahjt )

AT 2025ahjt - 2026-01-14 (T+27.1d)
Image below (2026-01-14.088) was taken 27.1 days after discovery of 2025ahjt
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-14 02:16 UT (#1390223-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aiov - Type CV? Transient (discovered 2025-12-27) (non-detection)

AT 2025aiov (Puppis)
AT 2025aiov (Type: CV?) discovered 2025-12-27.790 UT by XOSS
Alias: KATS25Y019, TCP J08080872-1948465
Discovery Magnitude 16.66 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude ( Filter)
Cataclysmic variable candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats25y019.html
( TNS 2025aiov )

AT 2025aiov - 2026-01-14 (T+17.2d)
Image below (2026-01-14.022) was taken 17.2 days after discovery of 2025aiov
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.3 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-14 00:40 UT (#1390187-91)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Extragalactic Transients (2025)

M31 Transients (2025)

M31N 2025-04a? - Nova (discovered 2025-04-16) in M31

M31 with M31N 2025-04a? (Andromeda)
M31N 2025-04a? (Type: unk) discovered 2025-04-16.120 UT by Kamil Hornoch et al.
Alias: PNV J00423788+4107427
Discovery Magnitude 16.4 (R Filter)
( Discovery Image )

M31N 2025-04a? - 2025-05-06 (T+19.9d)
Cam2 Reference Image
Position of M31N 2025-04a? (not visible in this exposure) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-06 00:30 UT
TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with M31N 2025-04a? - 2025-05-06 (T+19.9d)
Transient position (not readily distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-06 00:44 UT (#1320067-71)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04a? - 2025-05-06 (T+19.9d)
Image below (2025-05-06.024) was taken 19.9 days after discovery of M31N 2025-04a?
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.8 (Clear Filter

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-06 00:44 UT (#1320067-71)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04c? - Nova (discovered 2025-04-16) in M31

M31 with M31N 2025-04c? (Andromeda)
M31N 2025-04c? (Type: unk) discovered 2025-04-16.111 UT by Kamil Hornoch et al.
Alias: PNV J00433279+4116281
Discovery Magnitude 16.58 +/- 0.08 (Clear Filter)
( Discovery Image )

M31 -Spiral Galaxy with M31N 2025-04c? - 2025-05-01 (T+14.9d)
Cam2 Reference Image
Position of M31N 2025-04c? (not visible in this exposure) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-01 02:12 UT
TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with M31N 2025-04c? - 2025-05-01 (T+14.9d)
Transient position (not readily distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-01 01:22 UT (#1318119-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04c? - 2025-05-01 (T+14.9d)
Image below (2025-05-01.051) was taken 14.9 days after discovery of M31N 2025-04c?
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.4 (Clear Filter

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-01 01:22 UT (#1318119-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04c? - 2025-05-06 (T+19.9d)
Image below (2025-05-06.008) was taken 19.9 days after discovery of M31N 2025-04c?
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.8 (Clear Filter

Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-06 00:19 UT (#1320060-63)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04d? - Nova (discovered 2025-04-20) in M31 (non-detection)

M31 with M31N 2025-04d? (Andromeda)
M31N 2025-04d? (Type: unk) discovered 2025-04-20.107 UT by Kamil Hornoch et al.
Alias: PNV J00430092+4119021
Discovery Magnitude 18.1 (R Filter)
( Discovery Image )

M31N 2025-04d? - 2025-05-06 (T+15.9d)
Cam2 Reference Image
Position of M31N 2025-04d? (not visible) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-06 00:54 UT
TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with M31N 2025-04d? - 2025-05-06 (T+15.9d)
Position of Transient (not distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-06 01:06 UT (#1320075-78)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-04d? - 2025-05-06 (T+15.9d)
Image below (2025-05-06.041) was taken 15.9 days after discovery of M31N 2025-04d?
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.8 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-06 01:06 UT (#1320075-78)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-10a? - Extragalactic Nova (discovered 2025-10-17) in M31

M31N 2025-10a? (Andromeda)
M31N 2025-10a? (Type: unk) discovered 2025-10-17.480 UT by Koichi Itagaki
Alias: TCP J00384865+4046079
Discovery Magnitude 17.8
This object seems to be identical with the red variable Gaia DR3 381143133083759232.
"Discovered" iindependently on October 18.8112UT. -- Robert Fidrich, HAA/VSS, Budakeszi, Hungary.
( CBAT / TCP J00384865+4046079 )

M31N 2025-10a? T+3.6d)
Cam2 Reference Image
Position of M31N 2025-10a? (T+3.6d) (not visible in this wide view image) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-10-21 02:37 UT
TS 80mm APO, ZWO ASI178MC

M31N 2025-10a? - 2025-10-21 (T+3.6d)
Image below (2025-10-21.113) was taken 3.6 days after discovery of M31N 2025-10a?
Position of Transient (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-10-21 02:47 UT (#1369040-42)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-10a? - Reference Image (pre-nova)
Position of M31N 2025-10a? is shown by purple cross-hairs

DSS2 Color Image (captured in Aladin)

M31N 2025-10a? - 2025-10-21 (T+3.6d)
Image below (2025-10-21.113) was taken 3.6 days after discovery of M31N 2025-10a?
Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +16.38 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-10-21 02:47 UT (#1369040-42)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with M31N 2025-10a? - 2025-11-20 (T+34.4d)

Image below (2025-11-20.882) was taken 34.4 days after discovery of M31N 2025-10a?

Position of earlier transient (distinct) is shown by white cross-hairs
Measured Magnitude +14.46 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-20 21:17 UT (#1375021-24)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-10a? - 2025-11-23 (T+36.5d)
Image below (2025-11-23.021) was taken 36.5 days after discovery of M31N 2025-10a?
Position of reported transient (faint , brightened) is shown by white cross-hairs
Measured Magnitude +14.52 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-23 00:37 UT (#1376019-22)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-10a? - 2025-11-28 (T+42.5d)
Image below (2025-11-28.938) was taken 42.5 days after discovery of M31N 2025-10a?
Position of reported transient (faint , brightened) is shown by white cross-hairs
Measured Magnitude +14.46 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-28 22:38 UT (#1380006-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with M31N 2025-10a? - 2025-12-16 (T+60.3d)

Image below (2025-12-16.806) was taken 60.3 days after discovery of M31N 2025-10a?

Position of earlier transient (distinct) is shown by white cross-hairs
Measured Magnitude +14.42 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 19:28 UT (#1386070-73)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with M31N 2025-10a? - 2026-01-13 (T+88.4d)
Image below (2026-01-13.924) was taken 88.4 days after discovery of M31N 2025-10a?
Position of earlier transient (distinct) is shown by white cross-hairs
Measured Magnitude +14.44 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-13 22:20 UT (#1390128-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? - Extragalatic Nova (discovered 2025-11-21) in M31 (Alias AT2025aesw)

M31 with M31N 2025-11c? (Andromeda)
M31N 2025-11c? (Type: unk) discovered 2025-11-21.389 UT by Koichi Itagaki
Alias: TCP J00404022+4122433, 2025aesw
Discovery Magnitude 18.10 (gZTF Filter, AT discovery ZTF)
[ TNS 2025aesw ]

M31N 2025-11c? (T+6.4d)
Cam2 Reference Image
Position of M31N 2025-11c? (T+6.4d) (not visible in this wide view image) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-11-27 18:54 UT
TS 80mm APO, ZWO ASI178MC

M31N 2025-11c? - 2025-11-27 (T+6.4d)
Image below (2025-11-27.788) was taken 6.4 days after discovery of M31N 2025-11c?
Position of Transient (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-27 19:04 UT (#1379041-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? - 2025-11-25 (T+4.4d)

Image below (2025-11-25.810) was taken 4.4 days after discovery of M31N 2025-11c?

Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +17.63 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-25 19:35 UT (#1378054-58)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? - 2025-11-27 (T+6.4d)
Image below (2025-11-27.788) was taken 6.4 days after discovery of M31N 2025-11c?
Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +18.40 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-27 19:04 UT (#1379041-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? - 2025-11-28 (T+7.6d)
Image below (2025-11-28.951) was taken 7.6 days after discovery of M31N 2025-11c?
Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +18.45 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-28 23:00 UT (#1380012-16)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? - 2025-11-30 (T+9.4d)
Image below (2025-11-30.801) was taken 9.4 days after discovery of M31N 2025-11c?
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +18.6 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-30 19:22 UT (#1381061-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31N 2025-11c? / AT 2025aesw - 2025-12-02 (T+11.4d)
Image below (2025-12-02.782) was taken 11.4 days after discovery of 2025aesw
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-02 18:55 UT (#1382035-39)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025etj - Transient (discovered 2025-03-17) in M31

M31 with AT 2025etj (Andromeda)
AT 2025etj (Type: unk) discovered 2025-03-17.587 UT by XOSS
Alias: PSP25G, PNV J00411965+4138256
Discovery Magnitude 17.51 (Clear Filter)
( TNS 2025etj )

M31 with AT 2025etj - 2025-03-20 (T+2.6d)
Cam2 Reference Image
Position of AT 2025etj (not visible in this image) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse
M110 is visible in image

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-20 03:55 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025etj - 2025-03-20 (T+2.6d)
Position of transient (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-20 04:07 UT (#1304224-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025etj - 2025-03-20 (T+2.6d)
Image below (2025-03-20.166) was taken 2.6 days after discovery of 2025etj
Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +16.80 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-20 04:07 UT (#1304224-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025etj - 2025-08-13 (T+148.5d)
Image below (2025-08-13.048) was taken 148.5 days after discovery of 2025etj
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-13 01:18 UT (#1347063-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025keh - Transient (discovered 2025-05-07) in M31 (non-detection)

M31 with AT 2025keh (Andromeda)
AT 2025keh (Type: unk) discovered 2025-05-07.883 UT by XOSS
Alias: PAT17X2501, PNV J00414774+4112048
Discovery Magnitude 18.87 (Clear Filter)
( TNS 2025keh )

M31 -Spiral Galaxy with AT 2025keh - 2025-05-17 (T+9.1d)
Cam2 Reference Image
Position of AT 2025keh (not visible in this exposure) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-17 00:44 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025keh - 2025-05-17 (T+9.1d)
Transient position (not distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 00:54 UT (#1327064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025keh - 2025-05-17 (T+9.1d)
Image below (2025-05-17.031) was taken 9.1 days after discovery of 2025keh
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 00:54 UT (#1327064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kit - Transient (discovered 2025-05-08) in M31 (non-detection)

M31 with AT 2025kit (Andromeda)
AT 2025kit (Type: unk) discovered 2025-05-08.488 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25aapsjcy
Discovery Magnitude 17.79 (Clear Filter)
( TNS 2025kit )

M31 -Spiral Galaxy with AT 2025keh - 2025-05-17 (T+9.1d)
Cam2 Reference Image
Position of AT 2025kit (not visible in this exposure) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by white ellipse (extreme bottom right)

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-17 01:06 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025kit - 2025-05-17 (T+8.6d)
Transient position (not distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 01:15 UT (#1327071-75)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025kit - 2025-05-17 (T+8.6d)
Image below (2025-05-17.047) was taken 8.6 days after discovery of 2025kit
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-17 01:15 UT (#1327071-75)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kvc - Nova (discovered 2025-05-20) in M31 (non-detection)

M31 with AT 2025kvc (Andromeda)
AT 2025kvc (Type: Nova) discovered 2025-05-20.153 UT by Jingyuan Zhao
using 0.43-m f/6.8 Corrected Dall-Kirkham robotic telescope
at Alnitak Remote Observatories in Nerpio, Spain
Alias: PNV J00422300+4116197
Discovery Magnitude 18.09 (Clear Filter)
A strong and broad H-alpha line suggest a Nova in M31
( TNS 2025kvc )

M31 with AT 2025kvc - 2025-07-17 (T+57.9d)
Image below (2025-07-17.051) was taken 57.9 days after discovery of 2025kvc
Position of earlier transient (not visible, likely faded) is shown by white cross-hairs
Poor quality image (single frame (locate frame),
short exposure (10s only) )

Annotated CCD Image (70% size, square root scale)
10s exposure (single frame), 3x3 binning, Clear Filter
2025-07-17 01:14 UT (#1342017)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025kvc - 2025-08-10 (T+81.9d)
Image below (2025-08-10.041) was taken 81.9 days after discovery of 2025kvc
Position of earlier transient (not visible, likely faded) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-10 01:08 UT (#1346036-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025nsa - Extragalactic Nova (discovered 2025-06-17) in M31 (non-detection)

M31 with AT 2025nsa (Andromeda)
AT 2025nsa (Type: EGN) discovered 2025-06-17.150 UT by ATLAS & GOTO
using GOTO-North Telescope
Alias: ATLAS25gfa, GOTO25dpb
Discovery Magnitude 16.92 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 18.5
( TNS 2025nsa )

M31 with AT 2025nsa (T+73.9d)
Cam2 Reference Image
Position of AT 2025nsa (not visible) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-08-30 01:29 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025nsa - 2025-08-30 (T+73.9d)
Transient position (not visible) is shown by white circle

AT 2025nsa - 2025-08-30 (T+73.9d)
Image below (2025-08-30.063) was taken 73.9 days after discovery of 2025nsa
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-30 01:37 UT (#1353018-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025wwe - EGN Type Transient (discovered 2025-09-04) in M31

M31 with AT 2025wwe (Andromeda)
AT 2025wwe (Type: EGN) discovered 2025-09-04.455 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25aborgma, PNV J00431125+4146081
Discovery Magnitude 17.86 (g-ZTF Filter)
Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot
( TNS 2025wwe )

M31N 2025wwe - 2025-09-08 (T+4.5d)
Cam2 Reference Image
Position of M31N 2025wwe (not visible in this wide view image) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-09-08 22:46 UT
TS 80mm APO, ZWO ASI178MC

M31N 2025wwe - 2025-09-08 (T+4.5d)
Image below (2025-09-08.992) was taken 4.5 days after discovery of 2025wwe
Position of Transient (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-08 23:59 UT (#1359094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-08 (T+4.5d)
Image below (2025-09-08.992) was taken 4.5 days after discovery of 2025wwe
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +17.20 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-08 23:59 UT (#1359094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-09 (T+5.4d)
Image below (2025-09-09.869) was taken 5.4 days after discovery of 2025wwe
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.60 (Clear Filter)
Poor quality image (thin cloud, bright moonlit sky background)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-09 21:00 UT (#1360005-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-11 (T+7.5d)
Image below (2025-09-11.982) was taken 7.5 days after discovery of 2025wwe
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +17.77 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-11 23:41 UT (#1361121-24)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-12 (T+8.5d)
Image below (2025-09-12.922) was taken 8.5 days after discovery of 2025wwe
Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +17.95 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-12 22:16 UT (#1362053-57)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-18 (T+13.6d)
Image below (2025-09-18.065) was taken 13.6 days after discovery of 2025wwe
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +18.45 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-18 01:43 UT (#1364084-88)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-25 (T+20.7d)
Image below (2025-09-25.107) was taken 20.7 days after discovery of 2025wwe
Position of reported transient (very faint) is shown by white cross-hairs
Measured Magnitude +18.64 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-25 02:39 UT (#1365020-22)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-09-26 (T+21.7d)
Image below (2025-09-26.141) was taken 21.7 days after discovery of 2025wwe
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.8 (Clear Filter)
vs Prior Measured Magnitude +18.64 (Clear Filter, 2025-09-25. T+20.7d)
Poor quality image (poor sky transparency)

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-26 03:28 UT (#1366172-74)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2025wwe - 2025-10-29 (T+55.5d)
Image below (2025-10-29.999) was taken 55.5 days after discovery of 2025wwe
Position of reported transient (not visible / barely visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.8 (Clear Filter)
vs Prior Measured Magnitude +18.64 (Clear Filter, 2025-09-25. T+20.7d)
(Single frame)

Annotated CCD Image (125% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-10-29 23:58 UT (#1371048)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025agmm - Transient (discovered 2025-12-11) in M31

M31 with AT 2025agmm (Andromeda)
AT 2025agmm (Type: unk) discovered 2025-12-11.775 UT by Robert Fidrich
Alias: Vend78, PNV J00421476+4117284, M31N 2025-12b

( TNS 2025agmm )

M31 with AT 2025agmm - 2025-12-16 (T+5.0d)

Cam2 Reference Image

Position of 2025agmmj (not visible in this image) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-12-16 17:50 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025agmm - 2025-12-16 (T+5.0d)

Position of transients (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, log scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 17:59 UT (#1386025-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2025-12-16 (T+5.0d)

Image below (2025-12-16.744) was taken 5.0 days after discovery of 2025agmm

Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +15.99 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-16 17:59 UT (#1386025-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2025-12-19 (T+8.1d)

Image below (2025-12-19.840) was taken 8.1 days after discovery of 2025agmm

Position of reported transient (faint) is shown by white cross-hairs
Measured Magnitude +16.58 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 20:19 UT (#1387064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2025-12-24 (T+13.0d)

Image below (2025-12-24.740) was taken 13.0 days after discovery of 2025agmm

Position of earlier transient (very faint) is shown by white cross-hairs
Estimated Magnitude +17.1 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-24 17:53 UT (#1388015-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2026-01-15 (T+35.1d)
Image below (2026-01-15.846) was taken 35.1 days after discovery of 2025agmm
Position of earlier transient (very faint?) is shown by white cross-hairs
Limiting Magnitude +17.2 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-15 20:27 UT (#1391060-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2026-02-13 (T+64.1d)
Image below (2026-02-13.826) was taken 64.1 days after discovery of 2025agmm
Position of earlier transient (very faint) is shown by white cross-hairs
Limiting Magnitude +17.2 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-13 19:56 UT (#1393022-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agmm - 2026-02-26 (T+77.1d)
Image below (2026-02-26.924) was taken 77.1 days after discovery of 2025agmm
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +16.8 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-26 22:18 UT (#1395122-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2025agwf - Transient (discovered 2025-12-14) in MM31

M31 with AT 2025agwf (Andromeda)
AT 2025agwf (Type: unk) discovered 2025-12-14.746 UT by Italian Supernovae Search Project
Alias: PNV J00431764+4114201, M31N 2025-12c, Vend79

Discovery Magnitude 17.50 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 19.80 (Clear Filter)

( TNS 2025agwf )

M31 with AT 2025agwf - 2025-12-15 (T+1.1d)

Cam2 Reference Image
Position of AT 2025etj (not visible in this image)

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-05-20 03:55 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025agwf - 2025-12-15 (T+1.1d)

Image below (2025-12-15.892) was taken 1.1 days after discovery of 2025agwf

Position of earlier transient (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-15 21:34 UT (#1385037-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agwf - 2025-12-15 (T+1.1d)

Image below (2025-12-15.892) was taken 1.1 days after discovery of 2025agwf

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.99 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-15 21:34 UT (#1385037-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agwf - 2025-12-16 (T+2.0d)

Image below (2025-12-16.760) was taken 2.0 days after discovery of 2025agwf

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.68 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-12-16 18:14 UT (#1386032)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agwf - 2025-12-16 (T+2.0d)

Image below (2025-12-16.760) was taken 2.0 days after discovery of 2025agwf

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.68 (Clear Filter)

M31 with AT 2025agwf - 2025-12-19 (T+5.1d)

Image below (2025-12-19.867) was taken 5.1 days after discovery of 2025agwf

Position of earlier transient (faint) is shown by white cross-hairs
Estimated Magnitude +17.8 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 20:52 UT (#1387078-79)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025agwf - 2025-12-24 (T+10.1d)

Image below (2025-12-24.871) was taken 10.1 days after discovery of 2025agwf

Position of earlier transient (barely visible or not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.1 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-24 21:01 UT (#1388115-18)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ahch - Transient (discovered 2025-12-16) in M31

M31 with AT 2025ahch (Andromeda)
AT 2025ahch (Type: unk) discovered 2025-12-16.528 UT by XOSS
Alias: PSP25W, PNV J00422038+4114207, M31N 2025-12d, PNV J00422066+4114212

Discovery Magnitude 17.60 (Clear Filter)

( TNS 2025ahch )

M31 with AT 2025ahch - 2025-12-19 (T+3.2d)

Cam2 Reference Image
Position of AT 2025ahch (not visible in this exposure) is shown by blue circle
Limits of M31 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-12-19 17:05 UT
TS 80mm APO, ZWO ASI178MC

M31 with AT 2025ahch - 2025-12-19 (T+3.2d)

Position of reported in (faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 17:15 UT (#1387005-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025ahch - 2025-12-19 (T+3.2d)

Image below (2025-12-19.713) was taken 3.2 days after discovery of 2025ahch

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.79 (Clear Filter)
Note: Transient object is offset from its reported coordinates in TNS by 4.5 arc secs

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-19 17:15 UT (#1387005-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025ahch - 2025-12-24 (T+8.4d)

Image below (2025-12-24.884) was taken 8.4 days after discovery of 2025ahch

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.4 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-24 21:22 UT (#1388121-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025ahch - 2025-12-30 (T+14.3d)

Image below (2025-12-30.833) was taken 14.3 days after discovery of 2025ahch

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.3 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-30 20:09 UT (#1389049-53)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ahzx - Type EGN Transient (discovered 2025-12-22) in M31 (non-detection)

M31 with AT 2025ahzx (Andromeda)
AT 2025ahzx (Type: EGN) discovered 2025-12-22.874 UT by Flavio Castellani
Alias: OMB-PNV29, GOTO25mmc
Discovery Magnitude 18.5 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 19.5 (Clear- Filter)
At 0.76" from transient, a Red Supergiant Candidate with a R Magn of 20.662 is reristered
on simbad database. (LGGS J004228.48+411825.6).
Even if the 2 mag difference leads us to believe that the transient is not the
cataloged object, an outburst cannot be excluded.
( TNS 2025ahzx )

M31 with AT 2025ahzx - 2026-02-27 (T+67.0d)
Image below (2026-02-27.901) was taken 67.0 days after discovery of 2025ahzx

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-27 21:46 UT (#1396040-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025ahzx - 2026-02-27 (T+67.0d)
Image below (2026-02-27.901) was taken 67.0 days after discovery of 2025ahzx
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +16.7 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-27 21:46 UT (#1396040-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 Transients (2025)

AT 2025mmr - Transient (discovered 2025-05-29) in M33 (non-detection)

M33 with AT 2025mmr (Triangulum)
AT 2025mmr (Type: unk) discovered 2025-05-29.873 UT by XOSS
Alias: PAT17X2503, PNV J01340166+3049052
Discovery Magnitude 16.92 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 18.5
( TNS 2025mmr )

M33 with AT 2025mmr (T+92.2d)
Cam2 Reference Image
Position of AT 2025mmr (not visible) is shown by blue circle
Limits of M33 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-08-30 01:49 UT
TS 80mm APO, ZWO ASI178MC

M33 with AT 2025mmr - 2025-08-30 (T+92.2d)
Transient position (not visible) is shown by white circle

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-30 02:03 UT (#1353026-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2025mmr - 2025-08-30 (T+92.2d)
Image below (2025-08-30.081) was taken 92.2 days after discovery of 2025mmr
Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-30 02:03 UT (#1353026-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025yal - Transient /Candidate Nova (discovered 2025-09-20) in M33 (non-detection)

M33 with AT 2025yal (Triangulum)
AT 2025yal (Type: CV) discovered 2025-09-20.000 UT by Marco Lorrai
using 0.25m telescope.
Discovery Magnitude 18.0 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 19.0 (Clear Filter)
( TNS 2025yal )

M33 Spiral Galaxy with AT 2025yal - 2025-09-26 (T+6.2d)
Cam2 Reference Image
Position of AT 2025yal (not visible) is shown by blue circle
Limits of M33 Spiral Galaxy is shown by pale blue ellipse

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-09-26 04:12 UT
TS 80mm APO, ZWO ASI178MC

M33 with AT 2025yal - 2025-09-26 (T+6.2d)
Image below (2025-09-26.178) was taken 6.2 days after discovery of 2025yal
Transient position (not visible) is shown by white cross-hairs
Poor Quality Image (poor sky transparency

Annotated CCD Image (70% size, square root scale)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-09-26 04:20 UT (#1366182-86)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2025yal - 2025-09-26 (T+6.2d)
Image below (2025-09-26.178) was taken 6.2 days after discovery of 2025ya
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-09-26 04:20 UT (#1366182-86)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025yhk - Transient (discovered 2025-09-21) in M33 (non-detection)

M33 with AT 2025yhk (Triangulum)
AT 2025yhk (Type: unk) discovered 2025-09-21.702 UT by XOSS
Alias: PSP25P
Discovery Magnitude 18.23 (Clear Filter)
( TNS 2025yhk )

M33 - Spiral Galaxy
Cam2 Reference Image

Annotated CMOS Image (16% size)
(10s exposure, 1x1 binning)
2025-09-25 03:47 UT
TS 80mm APO, ZWO ASI178MC

M33 with AT 2025yhk - 2025-09-25 (T+3.5d)
Transient position (not visible) is shown by white circle

Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-09-25 03:57 UT (#1365062-66)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Other Extragalactic Transients (2025)

AT 2025fk - Transient (discovered 2025-01-03) in MCG -2-28-37

MCG -2-28-37 with AT 2025fk (Crater)
AT 2025fk (Type: unk) discovered 2025-01-03.523 UT by ZTF
Alias: ZTF25aaaqfrf
Discovery Magnitude 18.25 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.76
( TNS 2025fk )

MCG -2-28-37 - Spiral Galaxy
MCG -2-28-37 / PGC 33211 (catalog mag +14.7)
with other galaxies in same FOV: PGC 33194 (catalog mag +15.4),
PGC 33178 (catalog mag +16.0), PGC 33179 (catalog mag +16.2)

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-19 00:23 UT (#1303095-99)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

MCG -2-28-37 with AT 2025fk - 2025-03-19 (T+74.5d)
Image below (2025-03-19.010) was taken 74.5 days after discovery of 2025fk
Position of reported transient (not separately distinguishable) is shown by white cross-hairs
Measured Magnitude, Nucleus + SN +14.19 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-19 00:23 UT (#1303095-99)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025hy - Transient (discovered 2025-01-01) in UGC 10913

UGC 10913 with AT 2025hy (Hercules)
AT 2025hy (Type: unk) discovered 2025-01-01.573 UT by ZTF
Using Palomar 1.2m Oschin Telescope
Alias: ZTF25aabaclh
Discovery Magnitude 18.29 (r-ZTF Filter)
( TNS 2025hy )

UGC 10913 - Spiral Galaxy

Annotated CCD Image (70% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:52 UT (#1302136-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 10913 with AT 2025hy - 2025-03-18 (T+75.5d)
Image below (2025-03-18.072) was taken 75.5 days after discovery of 2025hy
Position of reported transient (very faint / barely detectable) is shown by white cross-hairs
Poor quality image (trailed stars)

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:52 UT (#1302136-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 10913 with AT 2025hy - 2025-04-07 (T+95.5d)
Image below (2025-04-07.117) was taken 95.5 days after discovery of 2025hy
Position of reported transient (very faint / barely detectable) is shown by white cross-hairs
Poor quality image (trailed stars)

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-07 02:58 UT (#1311186-90)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ccz - Transient (discovered 2025-02-19) in NGC 2565 (non-detection)

NGC 2565 with AT 2025ccz (Cancer)
AT 2025ccz (Type: unk) discovered 2025-02-19.755 UT by Yuan-Sheng Tsai
Discovery Magnitude 17.2 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.5
( TNS 2025ccz )

NGC 2565 - Spiral Galaxy with AT 2025ccz T+50.2d)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 23:00 UT (#1314046-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 2565 with AT 2025ccz - 2025-04-10 (T+50.2d)
Image below (2025-04-10.953) was taken 50.2 days after discovery of 2025ccz
Position of earlier supernova (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-10 23:00 UT (#1314046-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025gyi - Transient (discovered 2025-04-07) in UGC 12293

UGC 12293 with AT 2025gyi (Pegasus)
AT 2025gyi (Type: unk) discovered 2025-04-07.505 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25aalvyrp
Discovery magnitude 18.36 (r-ZTF Filter)
( TNS 2025gyi)

UGC 12293 - Spiral Galaxy
(alias PGC 70204, catalog mag +15.4)

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-02 01:28 UT (#1319047-51)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 12293 with AT 2025gyi - 2025-04-12 (T+4.6d)
Image below (2025-04-12.150) was taken 4.6 days after discovery of 2025gyi
Position of reported supernova (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.0 (Clear Filter)
Very poor quality image (bright sky background)

Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-12 03:39 UT (#1315181-82)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 12293 with AT 2025gyi - 2025-05-01 (T+23.6d)
Image below (2025-05-01.067) was taken 23.6 days after discovery of 2025gyi
Position of reported transient (very faint) is shown by white cross-hairs
Estimated Magnitude +18.5 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-01 01:44 UT (#1318126-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 12293 with AT 2025gyi - 2025-05-02 (T+24.5d)
Image below (2025-05-02.055) was taken 24.5 days after discovery of 2025gyi
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-02 01:28 UT (#1319047-51)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025kuz - Transient (discovered 2025-05-19) in UGC 1179 (non-detection)

UGC 1179 with AT 2025kuz (Andromeda)
AT 2025kuz (Type: unk) discovered 2025-05-19.494 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25aaqqncg
Discovery Magnitude 17.38 (r-ZTF Filter)
( TNS 2025kuz )

UGC 1179 - Galaxy

Annotated CCD Image (50% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-10 01:36 UT (#1346052-55)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 1179 with AT 2025kuz - 2025-08-10 (T+82.6d)
Image below (2025-08-10.062) was taken 82.6 days after discovery of 2025kuz
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-10 01:36 UT (#1346052-55)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025lwi - Transient (discovered 2025-05-24) in NGC 4395 (non-detection)

NGC 4395 with AT 2025lwi (Canes Venatici)
AT 2025lwi (Type: unk) discovered 2025-05-24.805 UT by Yuan-Sheng Tsai
using Mewlon300 + QHY294M
Discovery Magnitude 17.90 (L Filter)
( TNS 2025lwi)

NGC 4395 with AT 2025lwi - 2025-05-28 (T+3.2d)
Image below (2025-05-28.013) was taken 3.2 days after discovery of 2025lwi
Position of reported transient (not visible) is shown by white cross-hairs.
Measured Magnitude +15.91
Poor quality image (poor transparency, bright sky background)

Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-28 00:22 UT (#1330013-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4395 with AT 2025lwi - 2025-08-16 (T+84.1d)
Image below (2025-08-16.942) was taken 84.1 days after discovery of 2025lwi
Position of reported transient (not visible) is shown by white cross-hairs.
Non-Detection Limiting Magnitude +18.8

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-16 22:44 UT (#1350015-18)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4395 - Earlier Image with AT 2022fmn - 2022-04-27 (T+28.2d)
Image below (2022-04-27.999) was taken 28.2 days after discovery of 2022fmn
Position of reported AGN (bright & distinct) is shown by white cross-hairs)
Measured Magnitude +15.91

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2022-04-28 00:09 UT (#1004049-53)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025naw - Unconfirmed Transient (discovered 2025-06-07) in NGC 3938 (non-detection)

NGC 3938 with AT 2025naw (Ursa Major)
AT 2025naw (Type: unconf) discovered 2025-06-07.664 UT by Yuan-Sheng Tsai
using PlaneWave CDK17" Telescope
Discovery Magnitude 18.4 (L Filter)
( TNS 2025naw )

NGC 3938 with AT 2025naw - 2025-08-13 (T+66.4d)
Image below (2025-08-13.023) was taken 66.4 days after discovery of 2025naw
Position of SN (not visible) is shown by white cross-hairs
Poor quality image (due to poor sky transparency),

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-08-13 00:40 UT (#1347034-37)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025abzu - Type MP Transient (discovered 2025-10-30) in NGC 600

NGC 600 with AT 2025abzu (Cetus)
AT 2025abzu (Type: MP) discovered 2025-10-30.718 UT by KNTraP

Discovery Magnitude 18.40 (L Filter)
vs Prior Non-Detection Limiting Magnitude 20.00 (L Filter)

( TNS 2025abzu )

NGC 600 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-12 21:05 UT (#1384006-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 600 with AT 2025abzu - 2025-11-20 (T+21.2d)

Image below (2025-11-20.894) was taken 21.2 days after discovery of 2025abzu

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-20 21:37 UT (#1375027-31)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 600 with AT 2025abzu - 2025-11-25 (T+26.1d)

Image below (2025-11-25.840) was taken 26.1 days after discovery of 2025abzu

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-25 20:17 UT (#1378069-73)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 600 with AT 2025abzu - 2025-12-12 (T+43.2d)

Image below (2025-12-12.872) was taken 43.2 days after discovery of 2025abzu

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-12 21:05 UT (#1384006-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025acfi - Unconfirmed Transient (discovered 2025-10-29) in NGC 4710 (non-detection)

NGC 4710 with AT 2025acfi (Coma Berenices)
AT 2025acfi (Type: unconf) discovered 2025-10-29.816 UT by Masayuki Iwamoto

Discovery Magnitude 13.80 (Clear Filter)

( TNS 2025acfi )

NGC 4710 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-13 05:35 UT (#1384274-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4710 with AT 2025acfi - 2025-11-21 (T+22.4d)

Image below (2025-11-21.173) was taken 22.4 days after discovery of 2025acfi

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.2 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-21 04:18 UT (#1375263-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4710 with AT 2025acfi - 2025-12-13 (T+44.4d)

Image below (2025-12-13.228) was taken 44.4 days after discovery of 2025acfi

Position of earlier transient (not visible) is shown by white cross-hairs
Measured Magnitude +18.6 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-13 05:35 UT (#1384274-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4710 with AT 2025acfi - 2025-11-29 (T+30.4d)

Image below (2025-11-29.254) was taken 30.4 days after discovery of 2025acfi

Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.1 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-29 06:15 UT (#1380141-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025addb - Transient (discovered 2025-11-10) in NGC 3023

NGC 3023 with AT 2025addb (Sextans)
AT 2025addb (Type: unk) discovered 2025-11-10.171 UT by ATLAS
Alias: ATLAS25ofa

Discovery Magnitude 17.59 (wide-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 16.55 (orange-ATLAS Filter)

( TNS 2025addb )

NGC 3023 - Spiral Galaxy with AT 2025addb (T+33.0d)

Annotated CCD Image (50% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-13 03:03 UT (#1384207-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3023 with AT 2025addb - 2025-11-28 (T+17.9d)

Image below (2025-11-28.078) was taken 17.9 days after discovery of 2025addb

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude (SN + Blob) +15.62 (Clear Filter)

Poor quality image (poor seeing)

Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-28 01:57 UT (#1379206-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3023 with AT 2025addb - 2025-12-03 (T+23.0d)

Image below (2025-12-03.173) was taken 23.0 days after discovery of 2025addb

Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.55 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-03 04:12 UT (#1382286-87)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3023 with AT 2025addb - 2025-12-13 (T+33.0d)
Image below (2025-12-13.122) was taken 33.0 days after discovery of 2025addb

Position of reported transient (not separately distinguishable) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-13 03:03 UT (#1384207-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3023 with AT 2025addb - 2025-12-20 (T+40.0d)

Image below (2025-12-20.191) was taken 40.0 days after discovery of 2025addb

Position of earlier transient (not separately distinguishable) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-20 04:42 UT (#1387292-95)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3023 - Earlier Image (Mar 2020)
NGC 3023 (catalog mag +12.3) & NGC 3018 (catalog mag +13.3)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2020-03-19 23:38 UT (#763099-113)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - Afterglow Transient (discovered 2025-11-13)

AT 2025adhw (Cetus)
AT 2025adhw (Type: Afterglow) discovered 2025-11-13.794 UT by MASTER
Alias: MASTER OT J031644.26+071022.6, GRB 251113A

Discovery Magnitude 15.60 (Other- Filter)
vs Prior Non-Detection Limiting Magnitude 19.90 (Other Filter)
Bright optical transient (OT) inside GRB 251113A: Fermi GBM error-box
( TNS 2025adhw )

GRB 251113A is a Gamma-Ray Burst detected on November 13, 2025, by multiple observatories, including NASA's Fermi Gamma-ray Burst Monitor (GBM) and the Glowbug instrument on the International Space Station (ISS). Its short, bright gamma-ray emission was quickly localized, revealing a rapidly fading optical afterglow (2025adhw) and triggering follow-up observations from telescopes like BALROG (IceCube) and AstroSat CZTI. The burst featured several distinct peaks in its light curve, providing early data for scientists studying these powerful cosmic explosions.
GRB 251113A: Glowbug gamma-ray detection (GCN Circular 42689)

AT 2025adhw - 2025-12-08 (T+25.1d)

Image below (2025-12-08.925) was taken 25.1 days after discovery of 2025adhw

Position of reported transient (very faint) is shown by white cross-hairs
Estimate Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-08 22:21 UT (#1383025-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2025-12-12 (T+29.1d)

Image below (2025-12-12.910) was taken 29.1 days after discovery of 2025adhw

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +19.24 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-12 21:59 UT (#1384039-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2025-12-20 (T+36.2d)

Image below (2025-12-20.041) was taken 36.2 days after discovery of 2025adhw

Position of earlier transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +16.42 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-20 01:06 UT (#1387199-202)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2025-12-24 (T+41.0d)

Image below (2025-12-24.770) was taken 41.0 days after discovery of 2025adhw

Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +19.1 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-12-24 18:38 UT (#1388044-48)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2026-01-13 (T+61.0d)
Image below (2026-01-13.790) was taken 61.0 days after discovery of 2025adhw
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-13 19:04 UT (#1390026-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2026-01-15 (T+63.2d)
Image below (2026-01-15.946) was taken 63.2 days after discovery of 2025adhw
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.2 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-15 22:49 UT (#1391135-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025adhw - 2026-02-13 (T+92.0d)
Image below (2026-02-13.842) was taken 92.0 days after discovery of 2025adhw
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-13 20:20 UT (#1393030-33)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aesq - Unconfirmed Transient (discovered 2025-11-23) in NGC 5448 (non-detection)

NGC 5448 with AT 2025aesq (Ursa Major)
AT 2025aesq (Type: unconf) discovered 2025-11-23.816 UT by Isao Endoh & Masamitsu Nakamura
using Seestar S50 Telescope

Discovery Magnitude 16.00 (Clear Filter)

( TNS 2025aesq )

NGC 5448 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-11-28 06:22 UT (#1379286)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 5448 with AT 2025aesq - 2025-11-28 (T+4.4d)

Image below (2025-11-28.265) was taken 4.4 days after discovery of 2025aesq

Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude + (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2025-11-28 06:22 UT (#1379286)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 5448 with AT 2025aesq - 2025-11-29 (T+5.4d)

Image below (2025-11-29.233) was taken 5.4 days after discovery of 2025aesq

Position of earlier transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-11-29 05:45 UT (#1380126-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025aigy - Unconfirmed Transient (discovered 2025-12-25) in NGC 100 (non-detection)

NGC 100 with AT 2025aigy (Pisces)
AT 2025aigy (Type: unconf) discovered 2025-12-25.710 UT by Mohammad Odeh
Discovery Magnitude 16.2 (I-Cousins Filter)
vs Prior Non-Detection Limiting Magnitude 16.9 (I-Cousins Filter)
[On the following night, nothing appeared at the reported location,
suggesting it was an artifact.]
( TNS 2025aigy )

NGC 100 with AT 2025aigy - 2026-01-15 (T+21.1d)
Image below (2026-01-15.788) was taken 21.1 days after discovery of 2025aigy
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-15 19:03 UT (#1391019-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ajvt - Unconfirmed Transient (discovered 2025-12-30) in NGC 1588

NGC 1588 with AT 2025ajvt (Taurus)
AT 2025ajvt (Type: uncomfirmed) discovered 2025-12-30.122 UT by BlackGEM
Alias: BGEM J043041.83+003937.6
Discovery Magnitude 18.02 (BG-q-BlackGem Filter)
vs Prior Non-Detection Limiting Magnitude 20.81 (BG-q-BlackGem Filter)
( TNS 2025ajvt )

NGC 1587 and NGC 1588 - Elliptical Galaxies

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-13 20:25 UT (#1390064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1588 with AT 2025ajvt - 2026-01-13 (T+14.7d)
Image below (2026-01-13.844) was taken 14.7 days after discovery of 2025ajvt
Position of earlier transient (uncertain) is shown by white cross-hairs
Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-13 20:25 UT (#1390064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1588 with AT 2025ajvt - 2026-02-26 (T+58.7d)
Image below (2026-02-26.844) was taken 58.7 days after discovery of 2025ajvt
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.7 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-26 20:22 UT (#1395051-54)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ajwu - Afterglow Transient (discovered 2025-12-30) (non-detection)

AT 2025ajwu (Virgo)
AT 2025ajwu (Type: Afterglow) discovered 2025-12-30.082 UT by MASTER
Alias: MASTER OT J115935.40+112618.7, GRB 251230A
Discovery Magnitude 16.6 (Other- Filter)
vs Prior Non-Detection Limiting Magnitude 19.6 (Other- Filter)
may be detected as SN in 10-14 days.
Optical counterpart of GRB 251230A
(Swift https://gcn.nasa.gov/circulars/events/grb-251230a)
( TNS 2025ajwu )

AT 2025ajwu - 2026-01-16 (T+16.9d)
Image below (2026-01-16.020) was taken 16.9 days after discovery of 2025ajwu
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-01-16 00:38 UT (#1391186-90)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2025ajwu - 2026-02-13 (T+45.9d)
Image below (2026-02-13.981) was taken 45.9 days after discovery of 2025ajwu
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-02-13 23:42 UT (#1393118-22)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

This Web Page:	Astronomical Transients - 2025
Last Updated :	2026-03-05
Site Owner :	David Richards
Home Page :	David's Astronomy Web Site

David's Astronomy Pages (Deep Sky) Astronomical Transients - 2025

Galactic Transients (2025)

AT 2025il - CV Type Transient, RU Peg (discovered 2025-01-07)

AT 2025la - Transient (discovered 2025-01-11)

AT 2025lc - CV Type Transient (discovered 2025-01-10)

AT 2025ld - Transient (discovered 2025-01-09) (non-detection)

AT 2025lr - Afterglow Type Transient (discovered 2025-01-14) (non-detection)

AT 2025md - CV Type Transient, V1948 Cyg (discovered 2025-01-12)

AT 2025oj - CV Type Transient (discovered 2025-01-15) (non-detection)

AT 2025yl - CV Type Transient (discovered 2025-01-20)

AT 2025esv - Type CV? Transient (discovered 2025-03-17)

AT 2025esx - Type CV? Transient (discovered 2025-03-17)

AT 2025esy - Type CV? Transient (discovered 2025-03-17) (non-detection)

AT 2025euu - Type CV? Transient (discovered 2025-03-19)

AT 2025fbb - Type CV? Transient (discovered 2025-03-20) (non-detection)

AT 2025fbc - CV Type Transient (discovered 2025-03-20) (non-detection)

AT 2025fbd - Type CV? Transient (discovered 2025-03-20) (non-detection)

AT 2025fdr - Type CV? Transient (discovered 2025-03-21) (non-detection)

AT 2025fma - Type CV? Transient (discovered 2025-03-18)

AT 2025fuz - Type CV? Transient (discovered 2025-03-25) (non-detection)

AT 2025fwb - Type CV? Transient (discovered 2025-03-26)

AT 2025fwg - Transient (discovered 2025-03-26) (non-detection)

AT 2025gcz - Type CV? Transient (discovered 2025-03-27) (non-detection)

AT 2025ghv - Type CV? Transient (discovered 2025-03-31)

AT 2025gnb - Transient (discovered 2025-04-02) (non-detection)

AT 2025gsf - Transient (discovered 2025-04-04)

AT 2025hwl - CV Type Transient (discovered 2025-04-20) (non-detection)

AT 2025img - CV Type Transient (discovered 2025-04-26)

AT 2025imo - Type CV? Transient (discovered 2025-04-27) (non-detection)

AT 2025jpj - CV Type Transient (discovered 2025-05-03)

AT 2025kej - CV Type Transient (discovered 2025-05-07)

AT 2025kjp - Type CV? Transient (discovered 2025-05-12) (non-detection)

AT 2025kml - Type CV? Transient (discovered 2025-05-15) (non-detection)

AT 2025kyb - CV Type Transient (discovered 2025-05-18) (non-detection)

AT 2025mmq - Type CV? Transient (discovered 2025-05-29) (non-detection)

AT 2025nda - Type CV? Transient (discovered 2025-06-08)

AT 2025ndz - Type CV? Transient (discovered 2025-06-09) (non-detection)

AT 2025ran - Transient (discovered 2025-07-13) (non-detection)

AT 2025rcf - Type CV? Transient (discovered 2025-07-13) (non-detection)

AT 2025rut - Type CV? Transient (discovered 2025-07-21) (non-detection)

AT 2025sdf - CV Type Transient (discovered 2025-07-25)

AT 2025tes - Type CV? Transient (discovered 2025-08-03) (non-detection)

AT 2025usz - Type Nova Transient (discovered 2025-08-18)

AT 2025vel - Transient (discovered 2025-08-23)

AT 2025vob - Type CV? Transient

AT 2025voc - Type CV? Transient (discovered 2025-08-26)

AT 2025wbs - Type CV? Transient (discovered 2025-08-28)

AT 2025wxe - Type CV? Transient (discovered 2025-09-04)

AT 2025xdz - Type CV? Transient (discovered 2025-09-09)

AT 2025xea - Type CV? Transient (discovered 2025-09-09)

AT 2025abet - Type CV? Transient (discovered 2025-10-21) (non-detection)

AT 2025abfn - Transient (discovered 2025-10-22)

AT 2025abko - Transient (discovered 2025-10-22) (non-detection)

AT 2025abne - Transient (discovered 2025-10-24)

AT 2025absq - Transient (discovered 2025-10-23) (non-detection)

AT 2025abul - Type CV? Transient (discovered 2025-10-27) (non-detection)

AT 2025abwz - Type CV? Transient (discovered 2025-10-29) (non-detection)

AT 2025acrt - Transient (discovered 2025-11-07)

AT 2025acse - CV Type Transient (discovered 2025-11-07)

AT 2025acsf - Type CV? Transient (discovered 2025-11-07)

AT 2025acsh - Type CV? Transient (discovered 2025-11-02) (non-detection)

AT 2025acvr - CV Type Transient (discovered 2025-11-08)

AT 2025adxd - Type CV? Transient (discovered 2025-11-17) (non-detection)

AT 2025adxl - Type CV? Transient (discovered 2025-11-16) (non-detection)

AT 2025aefi - CV Type Transient (discovered 2025-11-20)

AT 2025aevo - Type CV? Transient (discovered 2025-11-25) (non-detection)

AT 2025afsx - Transient (discovered 2025-12-02) (non-detection)

AT 2025afuu - Type CV? Transient (discovered 2025-12-04) (non-detection)

AT 2025agev - Type CV? Transient (discovered 2025-12-03)

AT 2025aglw - Type CV? Transient (discovered 2025-12-11)

AT 2025agqo - Type CV? Transient (discovered 2025-12-09)

AT 2025agqu - Type CV? Transient (discovered 2025-12-11)

AT 2025agtl - Type CV? Transient (discovered 2025-12-11)

AT 2025ahek - Type CV? Transient (discovered 2025-12-15)

AT 2025ahjt - CV Type Transient (discovered 2025-12-18) (non-detection)

AT 2025aiov - Type CV? Transient (discovered 2025-12-27) (non-detection)

Extragalactic Transients (2025)

M31 Transients (2025)

M31N 2025-04a? - Nova (discovered 2025-04-16) in M31

M31N 2025-04c? - Nova (discovered 2025-04-16) in M31

David's Astronomy Pages (Deep Sky)
Astronomical Transients - 2025