David's Astronomy Pages (Deep Sky) Astronomical Transients - 2024

Transients 2023

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Transients 2024

This page documents observations and images of Astronomical Transients (AT) with discovery dates in 2024.  (Note: Supernovae in 2024 are presented on a separate page : SN 2024 )  (Note: Some images may roll over into the following year)
Galactic Transients (2024)         Name, type, discovery date
AT 2024ed - Transient (2023-12-27)  (non-detection) AT 2024ll - CV Type Transient (2024-01-04)  (non-detection) AT 2024mu - CV Type Transient (2024-01-04) AT 2024nn - CV Type Transient (2024-01-03) (non-detection) AT 2024qe - CV Type Transient (2024-01-04) AT 2024un - CV Type Transient (2024-01-06) AT 2024vf - CV Type Transient (2024-01-09) AT 2024vk - Type YSO? Transient (2024-01-08) AT 2024xf - Transient (2024-01-11) (non-detection) AT 2024ajb - Transient (2024-01-16) (non-detection) AT 2024agp - CV Type Transient (2024-01-15) AT 2024crd - Type Nova? Transient (2024-02-14) AT 2024ctz - CV Type Transient (2024-02-15) AT 2024dcg - CV Type Transient (2024-02-19) AT 2024djo - Type MP Transient (2024-02-28) (Attempt) AT 2024dof - CV Type Transient (2024-02-25) AT 2024dsj - CV Type Transient (2024-02-28) AT 2024ebd - CV Type Transient (2024-03-07) AT 2024efg - CV Type Transient (2024-03-10) AT 2024eim - Type YSO? Transient (2024-03-12) in M42 AT 2024eja - Type YSO? Transient (2024-03-13) AT 2024emm - CV Type Transient (2024-03-14) AT 2024eoh - Transient (2024-03-17)  (non-detection) AT 2024epa - CV Type Transient (2024-03-15) AT 2024epi - CV Type Transient (2024-03-16) AT 2024exg - CV Type Transient (non-detection) AT 2024fjg - CV Type Transient (2024-04-02) (non-detection) AT 2024fxd - Type Nova Transient (2024-03-28) AT 2024ger - Type YSO Transient (2024-04-02) AT 2024ges - Type YSO Transient (2024-04-03) AT 2024gyv - Transient (2024-04-20) (non-detection) AT 2024hai - CV Type Transient (2024-04-21)  (non-detection) AT 2024hgj - Transient (2024-04-25) (non-detection) AT 2024iim - Type YSO Transient (2024-05-01)   (non-detection) AT 2024ivo - CV Type Transient (2024-05-14) (Attempt) AT 2024jqo - CV Type Transient (2024-05-27)  (non-detection) AT 2024iwq - Transient (2024-05-15) (non-detection) AT 2024jri - Transient (2024-05-27)  (non-detection) AT 2024pxr - Type HPM Transient (2024-07-20) AT 2024rqk - Type CV? Transient (2024-08-08) AT 2024rrb - Transient (2024-08-09) AT 2024rwq - CV Type Transient (2024-08-07) AT 2024rzx - CV Type Transient (2024-08-11) AT 2024sje - Type YSO Transient (2024-08-08) near B33 AT 2024tde - Type M dwarf Transient (2024-08-25) AT 2024ugc - Transient (2024-08-30) AT 2024uue - CV Type Transient (2024-09-03)  (non-detection) AT 2024uun - CV Type Transient (2024-09-03)   (non-detection) AT 2024uvv - CV Type Transient (2024-09-06) AT2024uvw - Type CV? Transient (2024-09-06)  (non-detection) AT 2024uxx - Type CV? Transient (2024-09-07)  (non-detection) AT 2024uzm - Transient (2024-09-07) AT 2024vhf - CV Type Transient (2024-09-10)  (non-detection) AT 2024vhz - Type CV? Transient (2024-09-12) AT 2024vid - Type MP Transient (2024-09-07) AT 2024xiq - CV Type Transient (2024-10-01)  (non-detection) AT 2024vla - Type CV? Transient (2024-09-15) AT 2024vlc - Type CV? Transient (2024-09-15) AT 2024vsz - Type CV? Transient (2024-09-19)   (non-detection) AT 2024wxp - CV Type Transient (2024-09-26) AT 2024xhn - Type Nova? Transient (2024-10-04) AT 2024xiu - CV Type Transient (2024-10-02) AT 2024xvy - Type Nova Transient (2024-10-10)  (non-detection) AT 2024ycs - Type CV? Transient (2024-10-13)   (non-detection) AT 2024yej - Type CV? Transient (2024-10-14) AT 2024yho - Transient (2024-10-11)   (non-detection) AT 2024zck - CV Type Transient (2024-10-22) AT 2024zlk - Type CV? Transient (2024-10-25)
Extragalactic Transients (2024)         Name, type, discovery date, host galaxy (if relevant)
M31 Transients AT 2024ccb - EGN Transient (2024-02-10) in M31 Nova M31 2024-03b? (2024-03-13) (non-detection) AT 2024hvb - Transient (2024-04-28) in M31  (non-detection) AT 2024ikt - Transient (2024-05-07) in M31 (attempt) AT 2024koe - Transient (2024-06-08) in M31   (non-detection) AT 2024ssq - EGN Transient (2024-08-24) in M31 AT 2024xtk - Transient (2024-10-10) in M31 AT 2024ynw - Transient (2024-10-20) in M31  (non-detection)       M33 Transients M33 2024-08a? - Candidate Nova (2024-08-15) in M33 AT 2024sgd - Transient ( 2024-08-15) in M33 (= Nova M33 2024-08a?)       Other Extragalactic Transients AT 2024bv - Transient (2024-01-02) in UGC 12604 AT 2024cp - Transient (2024-01-02) in CGCG 108-092 AT 2024dda - Type MP Transient  (2024-02-20) in NGC 3467 AT 2024epz - Transient (2024-03-19) in UGC 2964 AT 2024ety - Transient (2024-03-21) in LEDA 1762640 (non-detection) AT 2024gwz - Transient  (2024-04-19) in NGC 1954  (non-detection) AT 2024unf - Transient (2024-09-04) in NGC 3073 (unconfirmed) AT 2024vrq - Transient (2024-09-18) in UGC 4957 AT 2024vsu - Transient (2024-09-19) in NGC 2830 AT 2024wny - Transient (2024-09-22) in NGC 3683  (non-detection) AT 2024woi - Type MP? Transient (2024-09-25)  (non-detection) AT 2024wpc - Type AGN Transient (2024-09-22) in PGC 1875557 AT 2024wqf - Type AGN Transient (2024-09-24) 4C 27.50 AT 2024xpy - Type BL Transient (2024-10-04) AT 2024yeu - Type MP Transient (2024-10-14) in UGC 2148   (non-detection) AT 2024zzo - Type MP Transient (2024-11-01) in NGC 473  (non-detection)

Galactic Transients (2024)

AT 2024ed - Transient (discovered 2023-12-27)

AT 2024ed (Vulpecula) AT 2024ed (Type: unk) discovered 2023-12-27.207 UT by Gaia Alias: Gaia24abq Discovery magnitude 15.91 (G-Gaia Filter) Apparently hostless transient No indication of progenitor object on DSS2 Colour or PanSTARRS DR1 plates  ( TNS 2024ed | Gaia24abq )

AT 2024ed - 2024-08-15 (T+232.8d) Image below (2024-08-15.967) was taken 232.8 days after discovery of 2024ed Position of reported transient (no longer 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 2024-08-15 23:21 UT (#1228052-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024ed - 2024-09-10 (T+258.7d) Image below (2024-09-10.876) was taken 258.7 days after discovery of 2024ed Position of reported transient (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) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-10 21:09 UT (#1240018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024ed on Transients 2024 Page >>

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AT 2024ll - CV Type Transient (discovered 2024-01-04) - non detection

AT 2024ll (Taurus) AT 2024ll (Type: CV) discovered 2024-01-04.756 UT by XOSS Alias: KATS24A001, TCP J05103196+2336557 Discovery magnitude 16.65 (Clear Filter)  ( TNS 2024ll )

AT 2024ll - 2024-03-04 (T+60.2d) Image below (2024-03-04.911) was taken 60.2 days after discovery of 2024ll Position of earlier transient (no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude  +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-04 21:53 UT (#1196055-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024ll - 2024-09-16 (T+255.4d) Image below (2024-09-16.147) was taken 255.4 days after discovery of 2024ll Position of earlier transient (no longer 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 2024-09-16 03:34 UT (#1244225-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024mu - CV Type Transient (discovered 2024-01-04)

AT 2024mu (Hercules) AT 2024mu (Type: CV) discovered 2024-01-04.095 UT by Gaia Alias: Gaia24adj Discovery magnitude 15.35 (G-Gaia Filter) vs Historic Magnitude 17.42 +/- 1.07 (SD) (Usual magnitude 19.0 +/- 0.8) Outburst in confirmed CV ASASSN-13bc  ( TNS 2024mu | Gaia24adj )

AT 2024mu - 2024-01-08 (T+4.0d) Image below (2024-01-08.057) was taken 4.0 days after discovery of 2024mu Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +15.49 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-01-08 01:25 UT (#1180143-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024mu - 2024-01-17 (T+13.1d) Image below (2024-01-17.237) was taken 13.1 days after discovery of 2024mu Position of reported transient (very faint) is shown by white cross-hairs Estimated Magnitude +18.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-01-17 05:43 UT (#1183123-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024nn - CV Type Transient (discovered 2024-01-03) - non-detection

AT 2024nn (Hydra) AT 2024nn (Type: CV) discovered 2024-01-03.870 UT by XOSS Alias: KATS24A003, TCP J09113728-1229315, Gaia24aer Discovery magnitude 16.92 (Clear Filter) Apparently hostless blue transient  ( TNS 2024nn | Gaia24aer )

AT 2024nn - 2024-02-24 (T+52.1d) Image below (2024-02-24.948) was taken 52.1 days after discovery of 2024nn Position of reported transient (not visible, likely faded) is shown by white cross-hairs Non-Detection, Limiting Magnitude +17.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-24 22:47 UT (#1191097-100) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024qe - CV Type Transient (discovered 2024-01-04)

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AT 2024un - CV Type Transient (discovered 2024-01-06)

AT 2024un (Vulpecula) AT 2024un (Type: CV) discovered 2024-01-06.751 UT by Gaia Alias: Gaia24ael Discovery magnitude 15.46 (G-Gaia Filter) vs Historic Magnitude 15.67 +/- 0.04 (SD) ~0.2 mag rise in Gaia source  ( TNS 2024un | Gaia24ael )

AT 2024un - 2024-08-31 (T+238.1d) Image below (2024-08-31.901) was taken 238.1 days after discovery of 2024un Position of reported transient (distinc) is shown by white cross-hairs Measured Magnitude +15.60 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 21:41 UT (#1237029-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024vf - CV Type Transient (discovered 2024-01-09)

AT 2024vf (Cancer) AT 2024vf (Type: CV) discovered 2024-01-09.678 UT by Tadashi Kojima Alias: TCP J09174122+0736487 Discovery magnitude 14.0 (Clear Filter) Corresponds to SDSS J091741.29+073647.4, Cataclysmic Binary Candidate with normal magnitude 21.5  ( TNS 2024vf )

Starfield with AT 2024vf (T+3.3d) and multiple faint galaxies. brightest galaxies in FOV are PGC 1327780 (catalog mag +16.9), PGC 1324005 (catalog mag +17.0) & PGC 1328138 (catalog mag +17.2) Other galaxies with magnitude +17.0 to +18.5

Annotated CCD Image (70% size, square root scale) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-01-12 23:35 UT (#1181074-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024vf - 2024-01-12 (T+3.3d) Image below (2024-01-12.981) was taken 3.3 days after discovery of 2024vf Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +14.64 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-01-12 23:35 UT (#1181074-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024vf - 2024-02-13 (T+35.3d) Image below (2024-02-13.992) was taken 35.3 days after discovery of 2024vf Position of reported transient (fading) is shown by white cross-hairs Measured Magnitude +16.37 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-13 23:52 UT (#1185141-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024vf - 2024-02-16 (T+38.3d) Image below (2024-02-16.949) was taken 38.3 days after discovery of 2024vf Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Mag +18.2 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 22:49 UT (#1186110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024vk - Type YSO? Transient (discovered 2024-01-08)

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AT 2024xf - Transient (discovered 2024-01-11)

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AT 2024ajb - Transient (discovered 2024-01-16) - non-detection

AT 2024ajb (Auriga) AT 2024ajb (Type: unk) discovered 2024-01-16.406 UT by ATLAS Alias: ATLAS24azn Discovery magnitude 16.75 (orange-ATLAS Filter)  ( TNS 2024ajb )

AT 2024ajb - 2024-02-24 (T+39.5d) Image below (2024-02-24.931) was taken 39.5 days after discovery of 2024ajb Position of reported transient (not visible, likely faded) is shown by white cross-hairs Non-Detection, Limiting Magnitude +18.0 (Clear Filter) Bright star in FOV is 51 Aur / HIP 31771 (mag 5.70)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-24 22:29 UT (#1191090-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024agp - CV Type Transient (discovered 2024-01-15)

AT 2024agp (Auriga) AT 2024agp (Type: CV) discovered 2024-01-15.768 UT by XOSS Alias: KATS24A004, ATLAS24azp, TCP J05363231+4201536 Discovery magnitude 16.76 (Clear Filter)  ( TNS 2024agp )

AT 2024agp - 2024-02-22 (T+38.2d) Image below (2024-02-22.921) was taken 38.2 days after discovery of 2024agp Position of earlier transient (not visible) is shown by white circle Non-Detection, Limiting Magnitude +17.8 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-23 05:04 UT (#1189236-40) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024crd - Type Nova? Transient (discovered 2024-02-14)

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AT 2024ctz - CV Type Transient (discovered 2024-02-15)

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AT 2024dcg - CV Type Transient (discovered 2024-02-19)

AT 2024dcg (Lynx) AT 2024dcg (Type: CV) discovered 2024-02-19.350 UT by ATLAS Alias: ATLAS16dzn Discovery magnitude 16.15 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.51  ( TNS 2024dcg )

AT 2024dcg - 2024-02-22 (T+2.7d) Image below (2024-02-22.016) was taken 2.7 days after discovery of 2024dcg Position of reported transient (not visible / unconfirmed ) is shown by white cross-hairs Measured Magnitude +15.39 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 120s exposure (average combine), 3x3 binning, Clear Filter 2024-02-22 00:25 UT (#1188131-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dcg - 2024-02-25 (T+5.7d) Image below (2024-02-25.071) was taken 5.7 days after discovery of 2024dcg Position of reported transient (faint) is shown by white cross-hairs Measured Magntitude +15.65 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 01:48 UT (#1191189-93) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024dcg on Transients 2024 Page >>

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AT 2024djo - Type MP Transient (discovered 2024-02-28)  (Attempt)

AT 2024djo (Camelopardalis) AT 2024djo (Type: MP) discovered 2024-02-28.634 UT by MASTER Alias: MASTER OT J075622.70+594105.8 Discovery Magnitude 13.2 (Clear Filter) vs Prior Non-Detection Limiting Mag 17.9  ( TNS 2024djo )

AT 2024djo - 2024-03-13 (T+14.3d) Image below (2024-03-13.940) was taken 14.3 days after discovery of 2024djo Position of reported transient (not visible, presumed faded) is shown by white cross-hairs Non-Detection, Limiting Magnitude +17.8 (Clear Filter) Transient appears to have faded and returned to its normal state Adjacent bright star is HIP 38791 (catalog mag +7.72)

Annotated CCD Image (100% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-03-13 22:34 UT (#1197106) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024djo on Transients 2024 Page >>

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AT 2024dof - CV Type Transient (discovered 2024-02-25)

AT 2024dof (Cassiopeia) AT 2024dof (Type: CV) discovered 2024-02-25.965 UT by Gaia Alias: Gaia24asd Discovery Magnitude 11.16 (G-Gaia Filter) vs Historic Magnitude 11.39 +/- 0.06 SD  Brightening in Be star TNS discovery report on TNS says Prior Non-Detection Limiting Mag 21.5 but Gaia data for the same date gives mag 11.39)  ( TNS 2024dof | Gaia24asd)

AT 2024dof - 2024-03-13 (T+16.9d) Image below (2024-03-13.823) was taken 16.9 days after discovery of 2024dof Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +10.85 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-13 19:48 UT (#1197006-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024dof on Transients 2024 Page >>

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AT 2024dsj - CV Type Transient (discovered 2024-02-28)

AT 2024dsj (Cassiopeia) AT 2024dsj (Type: CV) discovered 2024-02-28.787 UT by Gaia Alias: Gaia24ath Discovery Magnitude 15.25 (G-Gaia Filter) vs Historic Magnitude 15.03 +/- 0.02 SD  Gaia source fades by 0.2 mag TNS discovery report on TNS says Prior Non-Detection Limiting Mag 21.5 (2024-01-25 17:32) but Gaia data for the same date gives mag 15.26)  ( TNS 2024dsj | Gaia24ath)

AT 2024dsj - 2024-03-13 (T+14.1d) Image below (2024-03-13.857) was taken 14.1 days after discovery of 2024dsj Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +14.57 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-13 20:37 UT (#1197049-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-03-16 (T+16.3d) Image below (2024-03-16.119) was taken 16.3 days after discovery of 2024dsj Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +14.44 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-16 02:55 UT (#1198168-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-03-22 (T+22.4d) Image below (2024-03-22.142) was taken 22.4 days after discovery of 2024dsj Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +14.49 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-22 03:28 UT (#1200079-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-03-28 (T+28.3d) Image below (2024-03-28.085) was taken 28.3 days after discovery of 2024dsj Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +14.46 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 02:05 UT (#1201069-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-04-27 (T+58.3d) Image below (2024-04-27.059) was taken 58.3 days after discovery of 2024dsj Position of reported transient (faint, brightened slighly ?) is shown by white cross-hairs Measured Magnitude +14.37 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-04-27 01:28 UT (#1212012-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-05-18 (T+79.2d) Image below (2024-05-18.004) was taken 79.2 days after discovery of 2024dsj Position of reported transient (faint, fading) is shown by white cross-hairs Measured Magnitude +14.51 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-05-18 00:09 UT (#1219027-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024dsj - 2024-05-30 (T+91.2d) Image below (2024-05-30.016) was taken 91.2 days after discovery of 2024dsj Position of reported transient (faint, brightening?) is shown by white cross-hairs Measured Magnitude +14.33 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-05-30 00:26 UT (#1221040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024ebd - CV Type Transient (discovered 2024-03-07)

AT 2024ebd (Cygnus) AT 2024ebd (Type: CV) discovered 2024-03-07.229 UT by Gaia Alias: Gaia24awi, MNIC V84 Discovery magnitude 16.42 (G-Gaia Filter) vs Historic magnitude 17.48 +/- 0.46 SD  ( TNS 2024ebd  | Gaia24awi )

AT 2024ebd - 2024-09-15 (T+192.7d) Image below (2024-09-15.961) was taken 192.7 days after discovery of 2024ebd Position of earlier transient (very faint) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.88 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-15 23:07 UT (#1244110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024efg - CV Type Transient (discovered 2024-03-10)

AT 2024efg (Cygnus) AT 2024efg (Type: CV) discovered 2024-03-10.301 UT by Gaia Alias: Gaia24axs Alerting Magnitude 16.62 (G-Gaia Filter) vs Historic Magnitude 18.65 +/- 1.08 (SD) Outburst in candidate CV MGAB-V305  ( TNS 2024efg | Gaia23duv )

AT 2024efg - 2024-08-28 (T+170.7d) Image below (2024-08-28.002) was taken 170.7 days after discovery of 2024efg Position of reported 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 2024-08-28 00:06 UT (#1233062-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024efg - 2024-08-29 (T+171.7d) Image below (2024-08-29.046) was taken 171.7 days after discovery of 2024efg Position of reported 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 2024-08-29 01:09 UT (#1234021-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024efg - 2024-08-31 (T+174.7d) Image below (2024-08-31.976) was taken 174.7 days after discovery of 2024efg Position of reported 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) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 23:29 UT (#1237088-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024eim - Type YSO? Transient (discovered 2024-03-12) in M42

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AT 2024eja - Type YSO? Transient (discovered 2024-03-13)

AT 2024eja (Monoceros) AT 2024eja (Type: YSO?) discovered 2024-03-13.147 UT by Gaia Alias: Gaia24ayy Discovery Magnitude 12.70 (G-Gaia Filter) vs Historic Magnitude 12.29 +/- 0.04 SD Dimming in candidate YSO  ( TNS 2024eja | Gaia24ayy )

AT 2024eja - 2024-09-13 (T+184.0d) Image below (2024-09-13.161) was taken 184.0 days after discovery of 2024eja Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.18 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-13 03:56 UT (#1242183-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024eja - 2024-09-15 (T+186.0d) Image below (2024-09-15.164) was taken 186.0 days after discovery of 2024eja Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.21 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-15 04:04 UT (#1243166-70) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024eja - 2024-09-16 (T+187.0d) Image below (2024-09-16.166) was taken 187.0 days after discovery of 2024eja Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.36 (Clear Filter) Poor quality image (poor seeing, altitude 15.9° )

Annotated CCD Image (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-16 04:04 UT (#1244244-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024eja - 2024-09-17 (T+188.0d) Image below (2024-09-17.159) was taken 188.0 days after discovery of 2024eja Position of reported transient (distinct, fading ?) is shown by white cross-hairs Measured Magnitude +12.45 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-17 03:52 UT (#1245071-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024eja - 2024-09-18 (T+189.0d) Image below (2024-09-18.173) was taken 189.0 days after discovery of 2024eja Position of reported transient (distinct, brightening ?) is shown by white cross-hairs Measured Magnitude +12.34 (Clear Filter) Poor quality image (uneven sky background)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-18 04:17 UT (#1246165-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024emm - CV Type Transient (discovered 2024-03-14)

AT 2024emm (Andromeda) AT 2024emm (Type: CV) discovered 2024-03-14.443 UT by Gaia Alias: Gaia24azm Alerting Magnitude 16.62 (G-Gaia Filter) vs Historic Magnitude 19.32 +/- 1.15 (SD) Outburst in candidate CV  ( TNS 2024emm | Gaia24azm )

AT 2024emm - 2024-09-01 (T+170.7d) Image below (2024-09-01.105) was taken 170.7 days after discovery of 2024emm Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter) Observation indicates that candidate CV is in a low-stand state (ie within mag range of 19.8 - 21.1 according to Gaia data)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-01 02:34 UT (#1237199-203) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024emn - 2024-09-18 (T+187.7d) Image below (2024-09-18.156) was taken 187.7 days after discovery of 2024emn Position of reported transient (very faint, brightened ?) is shown by white cross-hairs Estimated Magnitude +17.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-18 03:47 UT (#1246150-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024eoh - Transient (discovered 2024-03-17) (non-detection)

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AT 2024epa - CV Type Transient (discovered 2024-03-15)

AT 2024epa (Aquila) AT 2024epa (Type: CV) discovered 2024-03-15.507 UT by Gaia Alias: Gaia24azt Discovery Magnitude 13.72 (G-Gaia Filter) vs Historic Magnitude 13.93 +/- 0.03 SD  ~0.3 mag rise in Gaia source  ( TNS 2024epa | Gaia24azt )

AT 2024epa - 2024-03-22 (T+6.6d) Image below (2024-03-22.117) was taken 6.6 days after discovery of 2024epa Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +13.84 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-22 02:52 UT (#1200057-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024epa - 2024-04-11 (T+26.6d) Image below (2024-04-11.127) was taken 26.6 days after discovery of 2024epa Position of reported transient (stable ?) is shown by white cross-hairs Measured Magnitude +13.81 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-04-11 03:06 UT (#1206104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024epa - 2024-04-13 (T+28.6d) Image below (2024-04-13.075) was taken 28.6 days after discovery of 2024epa Position of reported transient (stable) is shown by white cross-hairs Measured Magnitude +13.82 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-04-13 01:51 UT (#1207066-70) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024epi - CV Type Transient (discovered 2024-03-16)

AT 2024epi (Andromeda) AT 2024epi (Type: CV) discovered 2024-03-16.214 UT by Gaia Alias: Gaia24bad, ASASSN-14cj Discovery magnitude 15.86 (G-Gaia Filter) vs Historic magnitude 19.26 +/- 1.02 SD Outburst in candidate CV ASASSN-14cj (with 5 outbursts in 4 years based on Gaia data)  ( TNS 2024epi  | Gaia24bad )

AT 2024epi - 2024-09-16 (T+183.9d) Image below (2024-09-16.069) was taken 183.9 days after discovery of 2024epi Position of earlier transient (very faint / barely visible) is shown by white cross-hairs Estimated Magnitude +18.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-16 01:44 UT (#1244176-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024exg - CV Type Transient (non-detection)

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AT 2024fjg - CV Type Transient (discovered 2024-04-02)  (non-detection)

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AT 2024fxd - Type Nova Transient (discovered 2024-03-28)

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AT 2024ger - Type YSO Transient (discovered 2024-04-02)

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AT 2024ges - Type YSO Transient (discovered 2024-04-03)

AT 2024ges (Pegasus) AT 2024ges (Type: YSO) discovered 2024-04-03.251 UT by Gaia Alias: Gaia24bei Alerting Magnitude 14.72 (G-Gaia Filter) vs Historic Magnitude 12.58 +/- 0.19 SD Sudden dip of a known UXOR variable  ( TNS 2024ges | Gaia24bei )

AT 2024ges - 2024-09-15 (T+164.8d) Image below (2024-09-15.084) was taken 164.8 days after discovery of 2024ges Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +13.03 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-15 02:10 UT (#1243125-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024ges on Transients 2024 Page >>

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AT 2024gyv - Transient (discovered 2024-04-20)   (non-detection)

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AT 2024hai - CV Type Transient (discovered 2024-04-21) - non-detection

AT 2024hai (Hercules) AT 2024hai (Type: CV) discovered 2024-04-21.807 UT by XOSS Alias: KATS24H002, TCP J18063680+2909322 Discovery magnitude 15.31 (Clear Filter)  ( TNS 2024hai )

AT 2024hai - 2024-09-15 (T+147.1d) Image below (2024-09-15.933) was taken 147.1 days after discovery of 2024hai 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) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-15 22:26 UT (#1244084-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024hgj - Transient (discovered 2024-04-25)   (non-detection)

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AT 2024iim - Type YSO Transient (discovered 2024-05-01)   (non-detection)

AT 2024iim (Orion) AT 2024iim (Type: YSO) discovered 2024-05-01.620 UT by Gaia Alias: Gaia24bhy Alerting Magnitude 16.77 (G-Gaia Filter) vs Historic Magnitude 17.56 +/-0.12 SD Brightening in known YSO ( TNS 2024iim | Gaia24bhy )

AT 2024iim - 2024-10-20 (T+171.5d) Image below (2024-10-20.083) was taken 171.5 days after discovery of 2024iim Positon of earlier transient (not visible, probably faded ?) is shown by white cross hairs. Non-Detection Limiting Magnitude +17.5 (Clear Filter)   Poor quality image (bright sky background)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-20 02:07 UT (#1257247-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024ivo - CV Type Transient (discovered 2024-05-14) - Attempt

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AT 2024jqo - CV Type Transient (discovered 2024-05-27)

AT 2024jqo (Delphinus) AT 2024jqo (Type: CV) discovered 2024-05-27.803 UT by XOSS Alias: KATS24K004, TCP J20182208+1551176 Discovery Magnitude 16.66 (Clear Filter)  ( TNS 2024jqo )

AT 2024jqo - 2024-09-12 (T+108.1d) Image below (2024-09-12.926) was taken 108.1 days after discovery of 2024jqo Position of reported 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) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-12 22:17 UT (#1242030-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024iwq - Transient (discovered 2024-05-15)  (non-detection)

AT 2024iwq (Equuleus) AT 2024iwq (Type: unk) discovered 2024-05-15.132 UT by ATLAS Alias: ATLAS24hhm, ZTF24aamyrwl Alerting Magnitude 16.93 (cyan-ATLAS Filter)  ( TNS 2024iwq )

AT 2024iwq - 2024-09-17 (T+125.8d) Image below (2024-09-17.944) was taken 125.8 days after discovery of 2024iwq 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 2024-09-17 22:47 UT (#1246060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024jri - Transient (discovered 2024-05-27)

AT 2024jri (Andromeda) AT 2024jri (Type: unk) discovered 2024-05-27.747 UT by MASTER Alias: MASTER OT J000024.64+332541.8 Discovery Magnitude 15.7 (Clear Filter)  ( TNS 2024jri )

AT 2024jri - 2024-09-13 (T+108.3d) Image below (2024-09-13.069) was taken 108.3 days after discovery of 2024jri Position of reported 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) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-13 01:48 UT (#1242125-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024pxr - Type HPM Transient (discovered 2024-07-20)

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AT 2024rqk - Type CV? Transient (discovered 2024-08-08)

AT 2024rqk (Pegasus) AT 2024rqk (Type: CV?) discovered 2024-08-08.245 UT by GEOTS Alias: GEOTS-Balaji-2024-017, TCP J22082848+3054338 Discovery Magnitude 16.5 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 18.0  ( TNS 2024rqk )

AT 2024rqk - 2024-08-29 (T+20.8d) Image below (2024-08-29.031) was taken 20.8 days after discovery of 2024rqk Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude +18.49 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-29 00:53 UT (#1234013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024rrb - Transient (discovered 2024-08-09)

AT 2024rrb (Andromeda) AT 2024rrb (Type: unk) discovered 2024-08-09.070 UT by GOTO Alias: GOTO24eqj Discovery magnitude 16.32 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude +17.4  ( TNS 2024rrb )

AT 2024rrb - 2024-09-11 (T+33.0d) Image below (2024-09-11.072) was taken 33.0 days after discovery of 2024rrb Position of reported transient (no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-11 01:52 UT (#1240165-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024rwq - CV Type Transient (discovered 2024-08-07)

AT 2024rwq (Lyra) AT 2024rwq (Type: CV) discovered 2024-08-07.328 UT by ATLAS Alias: ATLAS24mrh Discovery magnitude 13.50 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.56  ( TNS 2024rwq )

AT 2024rwq - 2024-08-13 (T+6.6d) Image below (2024-08-13.969) was taken 6.6 days after discovery of 2024rwq Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +14.13 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-13 23:19 UT (#1227040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rwq - 2024-08-15 (T+8.6d) Image below (2024-08-15.959) was taken 8.6 days after discovery of 2024rwq Position of reported transient (distinct, but fading) 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 2024-08-15 23:04 UT (#1228045-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rwq - 2024-08-27 (T+20.6d) Image below (2024-08-27.918) was taken 20.6 days after discovery of 2024rwq Position of reported transient (fading) is shown by white cross-hairs Measured Magnitude +15.19 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 22:04 UT (#1233014-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rwq - 2024-08-31 (T+23.7d) Image below (2024-08-31.008) was taken 23.7 days after discovery of 2024rwq Position of reported transient (fading) is shown by white cross-hairs Measured Magnitude +15.60 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 00:15 UT (#1236019-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rwq - Reference Image Position of reported transient is shown by mauve cross-hairs The detailed Insert shows a very faint star at the position of AT 2024rwq

PanSTARRs colour image captured using Aladin

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AT 2024rzx - CV Type Transient (discovered 2024-08-11)

AT 2024rzx (Bootes) AT 2024rzx (Type: CV) discovered 2024-08-11.747 UT by MASTER Alias: MASTER OT J144401.19+220053.8 Discovery magnitude 12.5 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 19.6  ( TNS 2024rzx )

AT 2024rzx - 2024-08-15 (T+4.2d) Image below (2024-08-15.935) was taken 4.2 days after discovery of 2024rzx Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.50 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-15 22:30 UT (#1228031-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rzx - 2024-08-27 (T+16.2d) Image below (2024-08-27.908) was taken 16.2 days after discovery of 2024rzx Position of reported transient (distinct but fading) is shown by white cross-hairs Measured Magnitude +16.04 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 21:52 UT (#1233006-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024sje - Type YSO Transient (discovered 2024-08-08) near B33

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AT 2024tde - Type M dwarf Transient (discovered 2024-08-25)

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AT 2024ugc - Transient (discovered 2024-08-30)

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AT 2024uue - CV Type Transient (discovered 2024-09-03)  (Non-detection)

AT 2024uue (Andromeda) AT 2024uue (Type: CV) discovered 2024-09-03.746 UT by MASTER Alias: MASTER OT J230025.08+413118.7 Discovery Magnitude 16.8 (Clear Filter)  ( TNS 2024uue )

AT 2024uue - 2024-09-17 (T+13.4d) Image below (2024-09-17.097) was taken 13.4 days after discovery of 2024uue Position of reported  transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.0 (Clear Filters)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-17 02:22 UT (#1245025-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024uun - CV Type Transient (discovered 2024-09-03)  (non-detection)

AT 2024uun (Aquila) AT 2024uun (Type: CV) discovered 2024-09-03.569 UT by MASTER Alias: MASTER OT J200038.43+133129.1 Alerting Magnitude 14.6 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 18.2 ( TNS 2024uun )

AT 2024uun - 2024-10-19 (T+46.3d) Image below (2024-10-19.853) was taken 46.3 days after discovery of 2024uun Positon of earlier transient (not visible, probably faded ?) is shown by white cross hairs. Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-10-19 20:31 UT (#1257109-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024uvv - CV Type Transient (discovered 2024-09-06)

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AT2024uvw - Type CV? Transient (discovered 2024-09-06) - non-detection

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AT 2024uxx - Type CV? Transient (discovered 2024-09-07)

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AT 2024uzm - Transient (discovered 2024-09-07)

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AT 2024vhf - CV Type Transient (discovered 2024-09-10) Non-Detection

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AT 2024vhz - Type CV? Transient (discovered 2024-09-12)

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AT 2024vid - Type MP Transient (discovered 2024-09-07)

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AT 2024xiq - CV Type Transient (discovered 2024-10-01)   (non-detection)

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AT 2024vla - Type CV? Transient (discovered 2024-09-15)

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AT2024vlc - Type CV? Transient (discovered 2024-09-15)

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AT 2024vsz - Type CV? Transient (discovered 2024-09-19)  (non-detection)

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AT 2024wxp - CV Type Transient (discovered 2024-09-26)

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AT 2024xhn - Type Nova? Transient (discovered 2024-10-04)

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AT 2024xiu - CV Type Transient (discovered 2024-10-02)

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AT 2024xvy - Type Nova Transient (discovered 2024-10-10)  (non-detection)

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AT 2024ycs - Type CV? Transient (discovered 2024-10-13)  (non-detection)

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AT 2024yej - Type CV? Transient (discovered 2024-10-14)

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AT 2024yho - Transient (discovered 2024-10-11)  (non-detection)

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AT 2024zck - CV Type Transient (discovered 2024-10-22)

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AT 2024zlk - Type CV? Transient (discovered 2024-10-25)

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Extragalactic Transients (2024)

M31 Transients (2024)

AT 2024ccb - EGN Transient (discovered 2024-02-10) in M31

M31 with AT 2024ccb (Andromeda) AT 2024ccb (Type: EGN) discovered 2024-02-10.594 UT by XOSS Alias: PSP24L, PNV J00425721+4119038, ATLAS24chb Discovery Mag 17.74 (Clear Filter)  Low S/N spectrum resembles that of a Nova in M31 as already reported by Reguitti et al. (AstroNote 2024-50) ( TNS 2024ccb )

M31 - Spiral Galaxy with Nova AT 2024ccb (T+2.3d) Cam2 Reference Image Position of AT 2024ccb (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse (corners only)

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-02-12 21:42 UT TS 80mm APO, ZWO ASI178MC

M31 with Nova AT 2024ccb (T+2.3d) Position of reported nova (faint) is shown by white circle

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-12 21:47 UT (#1184023-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with Nova AT 2024ccb - 2024-02-12 (T+2.3d) Image below (2024-02-12.905) was taken 2.3 days after discovery of 2024ccb Position of reported transient (faint, brightening) is shown by white cross-hairs Measured Magnitude +16.04 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-12 21:47 UT (#1184023-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2024ccb - 2024-02-13 (T+3.3d) Image below (2024-02-13.858) was taken 3.3 days after discovery of 2024ccb Position of reported transient (faint, brightening slightly ?) is shown by white cross-hairs Measured Magnitude +15.96 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-13 20:43 UT (#1185050-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2024ccb - 2024-02-20 (T+10.4d) Image below (2024-02-20.983) was taken 10.4 days after discovery of 2024ccb Position of reported transient (very faint, barely visible) is shown by white cross-hairs Estimated Magnitude +16.0 to +16.5 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-20 23:44 UT (#1187093-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova AT 2024ccb (in M31) on Transients 2024 Page >>

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Nova M31 2024-03b? (discovered 2024-03-13)  (non-detection)

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 AT 2024ikt - Transient (discovered 2024-05-07) in M31

M31 with AT 2024ikt (Andromeda) AT 2024ikt (Type: unk) discovered 2024-05-07.489 UT by ZTF Alias: ZTF24aamrdsj Discovery Mag 18.4 (r-ZTF filter)  ( Rochester Supernova site | TNS 2024ikt )

M31 with AT 2024ikt Image taking with secondary scope showing position of reported transient (blue circle) relative to outline of M31 galaxy (white ellipse) & M31 Galaxy centre (labelled)

CMOS Image (16% size) 10s exposure (stacked), 1x1 binning 2024-05-16 00:41 UT (01:41 LT), Cam2_Ref TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2023ax(T+35.5d) Position of reported transient is shown by white circle

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-16 00:50 UT (#1217076-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024ikt - 2024-05-16 (T+8.5d) Image below (2024-05-16.029) was taken 8.5 days after discovery of 2024ikt Position of reported transient (not visible) is shown by white circle

Annotated CCD Image (125% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-16 00:50 UT (#1217076-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024hvb - Transient (discovered 2024-04-28) in M31  (non-detection)

M31 with AT 2024hvb (Andromeda) AT 2024hvb (Type: unk) discovered 2024-04-28.047 UT by Kamil Hornoch et al. Alias: Nova M31 2024-04b?, ZTF24aalngiq, PNV J00430814+4110243 Discovery Mag 17.79 (r-ZTF Filter) Type unknown  ( Rochester Supernova site | TNS 2024hvb | Discovery Image )

M31 with AT 2024hvb Image taking with secondary scope showing position of reported transient (blue circle) relative to outline of M31 galaxy (white ellipse) & M31 Galaxy centre (labelled)

CMOS Image (16% size) 10s exposure, 1x1 binning 2024-10-17 23:07 UT (2024-10-18 00:07 LT), Cam2_Ref TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024hvb  (T+172.9d) Position of earlier transient (not visible) is shown by white circle

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-17 23:19 UT (#1256056-60) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024hvb - 2024-10-17 (T+172.9d) Image below (2024-10-17.965) was taken 172.9 days after discovery of 2024hvb Position of reported transient (not visible, likely faded) is shown by white cross-hairs

Annotated CCD Image (125% size, linear scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-17 23:19 UT (#1256056-60) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024koe - Transient  (discovered 2024-06-08)  in M31 (non-detection)

AT 2024koe (Andromeda) AT 2024koe (Type: unk) discovered 2024-06-08.412 UT by GEOTS Alias: GEOTS-Balaji-2024-008 Discovery Magnitude 16.8 (Other Filter)  ( TNS 2024koe )

AT 2024koe - Wide View, 2024-08-21 (T+73.6d) Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-21 01:36 UT (#1231033-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024koe - 2024-08-21 (T+73.6d) Image below (2024-08-21.060) was taken 73.6 days after discovery of 2024koe 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 2024-08-21 01:36 UT (#1231033-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024koe - 2024-09-11 (T+95.6d) Image below (2024-09-11.978) was taken 95.6 days after discovery of 2024koe Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-09-11 23:28 UT (#1241041) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024koe - 2024-09-13 (T+96.6d) Image below (2024-09-13.047) was taken 96.6 days after discovery of 2024koe Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-13 01:17 UT (#1242110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024ssq - EGN Transient (discovered 2024-08-24) in M31

M31 with AT 2024ssq (Andromeda) AT 2024ssq (Type: Nova) discovered 2024-08-24.996 UT by Italian Supernovae Search Project Discovery Mag 16.4 (L_ filter)  ( TNS 2023ttu )

M31 - Spiral Galaxy with AT 2024ssq Cam2 Reference Image, Position of AT 2024ssq is shown by blue circle Limits of M31 Spiral Galaxy shown by white arc

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-08-28 00:53 UT (01:53 LT) TS 80mm APO, ZWO ASI178MC

M31 - Spiral Galaxy with AT 2024ssq (T+3.0d) Position of reported transient (very faint) is shown by white circle

Annotated CCD Image (70% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:06 UT (#1233083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024ssq - 2024-08-28 (T+3.0d) Image below (2024-08-28.039) was taken 3.0 days after discovery of 2024ssq Position of reported transient (very faint) is shown by white cross-hairs Estimated Magnitude +18.1 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:06 UT (#1233083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2024ssq - 2024-08-29 (T+4.1d) Image below (2024-08-29.061) was taken 4.1 days after discovery of 2024ssq Position of reported transient (very faint) is shown by white cross-hairs Estimated Magnitude +18.7 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-29 01:37 UT (#1234033-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2024ssq - 2024-08-31 (T+6.1d) Image below (2024-08-31.106) was taken 6.1 days after discovery of 2024ssq Position of reported transient (very faint) is shown by white cross-hairs Estimated Magnitude +18.9 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 02:42 UT (#1236092-96) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 AT 2024ssq - 2024-08-31 (T+6.9d) Image below (2024-08-31.916) was taken 6.9 days after discovery of 2024ssq Position of reported transient (very faint / barely visible) is shown by white cross-hairs Estimated Magnitude +19.0 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 22:07 UT (#1237041-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024xtk - Transient (discovered 2024-10-10) in M31

M31 with AT 2024xtk (Andromeda) AT 2024xtk (Type: unk) discovered 2024-10-10.689 UT by KNTraP Alias: PSP24X, PNV J00423476+4115351 Discovery Mag 16.46 (Clear Filter)  ( Rochester Supernova site | TNS 2024xtk )

M31 with AT 2024xtk Image taking with secondary scope showing position of reported transient (blue circle) relative to outline of M31 galaxy (white ellipse) & M31 Galaxy centre (labelled)

CMOS Image (16% size) 10s exposure, 1x1 binning 2024-10-14 22:26 UT (23:26:41 LT), Cam2_Ref TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024xtk (T+4.2d) Position of reported transient is shown by white circle

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-14 22:36 UT (#1255063-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024xtk - 2024-10-14 (T+4.2d) Image below (2024-10-14.936) was taken 4.2 days after discovery of 2024xtk Position of reported transient (barely visible) is shown by white cross-hairs

Annotated CCD Image (125% size, linear scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-14 22:36 UT (#1255063-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024ynw - Transient (discovered 2024-10-20) in M31  (non-detection)

M31 with AT 2024ynw (Andromeda) AT 2024ynw (Type: unk) discovered 2024-10-20.536 UT by XOSS Alias: PSP24Y, PNV J00430343+4118310 Discovery Magnitude 17.72 (Clear Filter)  ( TNS 2024ynw )

M31 - Spiral Galaxy with AT 2024ynw (T+4.4d) Cam2 Reference Image Position of AT 2023hrm (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse (bottom left-hand corner)

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-10-24 23:15 UT (00:15 BST) TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with AT 2024ynw (T+4.4d)

Annotated CCD Image (70% size, square root scale) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-10-24 23:19 UT (#1259086) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024ynw - 2024-10-24 (T+4.4d) Image below (2024-10-24.972) was taken 4.4 days after discovery of 2024ynw Position of reported transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +16.8 (Clear Filter)

Annotated CCD Image (125% size, log scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-10-24 23:19 UT (#1259086) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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M33 Transients (2024)

M33 2024-08a? - Candidate Nova (discovered 2024-08-15) in M33

M33 with Nova M33 2024-08a? (Triangulum) Nova M33 2024-08a? (Type: unk) discovered 2024-08-15.373 UT by GEOTS Alias: PNV J01340281+3042406 Discovery Magnitude 17.2 (Clear Filter) Possible Nova in M33  ( CBAT Nova M33 2024-08a? ) Equivalence of transient position indicates that AT 2024sgd = Nova M33 2024-08a?

M33 with Nova M33 2024-08a? Cam2 Reference Image, Position of Nova M33 2024-08a? is shown by blue circle Limits of M33 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2023-08-16 00:10 UT (01:10 LT) TS 80mm APO, ZWO ASI178MC

M33 with Nova M33 2024-08a? - 2024-08-16 (T+0.6d) Position of reported transient (faint) is shown by white cross-hairs

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-16 00:23 UT (#1228087-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-08-16 (T+0.6d) Image below (2024-08-16.010) was taken 0.6 days after discovery of Nova M33 2024-08a? Position of reported transient (faint) is shown by white cross-hairs  Measured Magnitude +18.03 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-16 00:23 UT (#1228087-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-08-21 (T+5.7d) Image below (2024-08-21.074) was taken 5.7 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Estimated Magnitude +18.1 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-21 01:54 UT (#1231040-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-08-27 (T+12.6d) Image below (2024-08-27.972) was taken 12.6 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.15 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 23:28 UT (#1233047-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2024sgd - 2024-08-28 (T+12.7d) Image below (2024-08-28.086) was taken 12.7 days after discovery of 2024sgd Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude +17.95 (Clear Filter) Equivalence of transient position indicates that AT 2024sgd = Nova M33 2024-08a?

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 02:12 UT (#1233104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-08-29 (T+13.7d) Image below (2024-08-29.078) was taken 13.7 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.00 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-29 02:01 UT (#1234041-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2024sgd - 2024-08-31 (T+15.7d) Image below (2024-08-31.059) was taken 15.7 days after discovery of 2024sgd Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude +18.02 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 01:34 UT (#1236071-75) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-09-11 (T+26.7d) Image below (2024-09-11.057) was taken 26.7 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.07 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-11 01:30 UT (#1240158-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-09-11 (T+27.6d) Image below (2024-09-11.993) was taken 27.6 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.04 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-12 00:00 UT (#1241046-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-09-13 (T+28.8d) Image below (2024-09-13.142) was taken 28.8 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.01 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-13 03:32 UT (#1242172-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-10-19 (T+65.6d) Image below (2024-10-19.931) was taken 65.6 days after discovery of Nova M33 2024-08a? Position of earlier transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +17.8 (Clear Filter) Poor quality image (poor S/N)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-19 22:29 UT (#1257149-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - Reference Image Position of reported transient is shown by mauve cross-hairs  Object appears to be a previously known star visible in DSS2 Colour image

DSS2 Image captured in Aladin

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AT 2024sgd - Transient (discovered 2024-08-15) in M33 (= Nova M33 2024-08a?)

M33 with AT 2024sgd (Triangulum) Alias: Nova M33 2024-08a? AT 2024sgd (Type: unk) discovered 2024-08-15.373 UT by GEOTS Alias: Nova M33 2024-08a?, GEOTS-Balaji-2024-018, PNV J01340281+3042406 Discovery Magnitude 17.2 (Clear Filter)  ( TNS 2024sgd )

M33 - Spiral Galaxy with AT 2024sgd Cam2 Reference Image, Position of AT 2024sgd is shown by blue circle Limits of M34 Spiral Galaxy shown by white/pale blue ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-08-28 02:00 UT (03:00 LT) TS 80mm APO, ZWO ASI178MC

M33 - Spiral Galaxy with AT 2024sgd (T+12.7d) Position of reported transient (very 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 2024-08-28 02:12 UT (#1233104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2024sgd - 2024-08-28 (T+12.7d) Image below (2024-08-28.086) was taken 12.7 days after discovery of 2024sgd Position of reported transient (very 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 2024-08-28 02:12 UT (#1233104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - Earlier Image 2024-08-21 (T+5.7d) Image below (2024-08-21.074) was taken 5.7 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Estimated Magnitude +18.1 (Clear Filter) Image indicates that Nova M33 2024-08a?  = AT 2024sgd

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-21 01:54 UT (#1231040-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Other Extragalactic Transients (2024)

AT 2024bv - Transient (discovered 2024-01-02) in UGC 12604

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 AT 2024cp - Transient (discovered 2024-01-02) in CGCG 108-092

CGCG 108-092 with AT 2024cp (Hercules) AT 2024cp (Type: unk) discovered 2024-01-02.547 UT by ALeRCE Alias: ZTF24aaadlka Discovery Magnitude 17.17 (r-ZTF Filter)  ( TNS 2024cp | Gaia24azt )

CGCG 108-092 - Galaxy with AT 2024cp (T+99.5d) CGCG 108-092 / PGC 56896 (catalog mag +15.8) with numerous adjacent galaxies PGC 56872 (catalog mag +14.7), PGC 56886 (catalog mag +15.6),  PGC 1504900 (catalog mag +16.7),  PGC 1505972 (catalog mag +16.9) PGC 1506589 (catalog mag +17.2), PGC 1506452 (catalog mag +17.2), PGC 1507739 (catalog mag +17.3),  PGC 1507209 (catalog mag +17.3), PGC 1508450 (catalog mag +17.3), PGC 1506573 (catalog mag +17.4) PGC 1506870 (catalog mag +17.6) + several other faint galaxies.

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-04-11 01:38 UT (#1206060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

CGCG 108-092 with AT 2024cp - 2024-04-11 (T+99.5d) Image below (2024-04-11.063) was taken 99.5 days after discovery of 2024cp Position of reported transient (not separately distinguishable) is shown by white cross-hairs Measured Magnitude (Galaxy+Transient) +15.00 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-04-11 01:38 UT (#1206060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024dda - Type MP Transient  (discovered 2024-02-20) in NGC 3467

NGC 3467 with AT 2024dda (Leo) AT 2024dda (Type: MP) discovered 2024-02-20.987 UT by Italian Supernovae Search Project Alias: MP (18961 Discovery Magnitude 17.94 (Clear Filter) vs Prior Non-Detection Limiting Mag 19.0  ( TNS 2024dda )

NGC 3467 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-15 21:31 UT (#1198056-60) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3467 with AT 2024dda - 2024-02-29 (T+9.0d) Image below (2024-02-29.995) was taken 9.0 days after discovery of 2024dda Position of reported transient (not visible) is indicated by white cross-hairs. Poor quality image (cloud / single frame)

Annotated CCD Image (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-02-29 23:53 UT (#1195054) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3467 with AT 2024dda - 2024-03-15 (T+23.9d) Image below (2024-03-15.891) was taken 23.9 days after discovery of 2024dda Position of reported transient (not visible) is indicated by white cross-hairs. Non-Detection Limiting Magnitude +17.6 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-15 21:31 UT (#1198056-60) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024epz - Transient (discovered 2024-03-19) in UGC 2964

UGC 2964 with AT 2024epz (Taurus) AT 2024epz (Type: unk) discovered 2024-03-19.284 UT by ATLAS Alias: ATLAS24efj Discovery Magnitude 18.42 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Mag 18.68  ( TNS 2024epz )

UGC 2964 - Spiral Galaxy with AT 2024epz

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-20 21:02 UT (#1199042-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 2964 with AT 2024epz - 2024-03-20 (T+1.6d) Image below (2024-03-20.872) was taken 1.6 days after discovery of 2024epz Position of reported transient (faint) is indicated by white cross-hairs.

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-20 21:02 UT (#1199042-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 2964 with AT 2024epz - 2024-03-29 (T+10.6d) Image below (2024-03-29.882) was taken 10.6 days after discovery of 2024epz Position of reported transient (not visible) is indicated by white cross-hairs. Very poor quality image (cloud / poor transparency)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-29 21:15 UT (#1202018-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 2964 with AT 2024epz - 2024-03-30 (T+11.6d) Image below (2024-03-30.881) was taken 11.6 days after discovery of 2024epz Position of reported transient (not distinguishable) is indicated by white cross-hairs. Non-Detection Limiting Magnitude +18.2  (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-30 21:13 UT (#1203027-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024ety - Transient (discovered 2024-03-21) in LEDA 1762640  (non-detection)

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AT 2024gwz - Transient  (discovered 2024-04-19) in NGC 1954  (non-detection)

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AT 2024unf - Transient (discovered 2024-09-04) in NGC 3073  (Unconfirmed)

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AT 2024vrq - Transient (discovered 2024-09-18) in UGC 4957

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AT 2024vsu - Transient (discovered 2024-09-19) in NGC 2830

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AT 2024wny - Transient (discovered 2024-09-22) in NGC 3683  (non-detection)

NGC 3683 with AT 2024wny (Ursa Major) AT 2024wny (Type: unk) discovered 2024-09-22.217 UT by Gaia Alias: Gaia24cpm Discovery Magnitude 17.5 (Clear Filter) Candidate SN near galaxy NGC 3683  ( TNS 2024wny | Gaia24cpm )

NGC 3683 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-02 01:57 UT (#1249262-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3683 with AT 2024wny - 2024-10-02 (T+9.9d) Image below (2024-10-02.075) was taken 9.9 days after discovery of 2024wny Position of earlier transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +18.4 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-02 01:57 UT (#1249262-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024wny (in NGC 3683) on Transients 2024 Page >>

NGC 3683 with AT2022azb - Earlier Image 2022-03-15 (T+54.7d) Image below (2022-03-15.095) was taken 54.7 days after discovery of 2022azb Position of reported transient (not visible) is shown by white cross-hairs Earlier images of AT2022azb (NGC 3683) on Transients 2022 Page

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-03-15 02:26 UT (#985046-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024woi - Type MP? Transient (discovered 2024-09-25)  (non-detection)

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AT 2024wpc - Type AGN Transient (discovered 2024-09-22) in PGC 1875557

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AT 2024wqf - Type AGN Transient (discovered 2024-09-24) 4C 27.50

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AT 2024xpy - Type BL Transient (discovered 2024-10-04)

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AT 2024yeu - Type MP Transient (discovered 2024-10-14) in UGC 2148  (non-detection)

UGC 2148 with AT 2024yeu (Aries) AT 2024yeu (Type: MP) discovered 2024-10-14.660 UT by tokuoka Discovery Magnitude 15.4 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 18.0  ( TNS 2024yeu )

UGC 2148 - Spiral Galaxy UGC 2148 (alias  PGC 10072, catalog mag +15.5) with adjacent galaxies PGC 10056 (catalog mag +16.7) &  PGC 1413321 (catalog mag +17.3)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-22 03:26 UT (#1258074-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 2148 with AT 2024yeu - 2024-10-22 (T+7.5d) Image below (2024-10-22.137) was taken 7.5 days after discovery of 2024yeu Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.2 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-22 03:26 UT (#1258074-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2024zzo - Type MP Transient (discovered 2024-11-01) in NGC 473 (non-detection)

NGC 473 with AT 2024zzo (Pisces) AT 2024zzo (Type: MP) discovered 2024-11-01.875 UT by Luca Sassatelli Discovery Magnitude 17.6 (Clear Filter)  ( TNS 2024zzo )

NGC 473 - Spiral Galaxy

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-03 00:29 UT (#1261007-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 473 - Detail

Annotated CCD Image (150% size, square root scale, cropped) Image details as above

NGC 473 with AT 2024zzo - 2024-11-03 (T+1.1d) Image below (2024-11-03.014) was taken 1.1 days after discovery of 2024zzo Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +15.54 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-03 00:29 UT (#1261007-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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