David's Astronomy Pages CCD Images - Session 1171 (2023-12-02)

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12P/Pons-Brooks - Comet 29P/Schwassmann-Wachmann - Comet 32P/Comas Sola - Comet 61P/Shajn-Schaldach - Comet 103P/Hartley - Comet 144P/Kushida - Comet C/2017 K2 (PANSTARRS) - Comet     Nova Cas 2021 - Nova (V1405 Cas)     V0390 Cep - Variable Star and Nebula     AT 2022szi - Transient (Attempt) AT 2022weo - Type HPM Transient AT 2023cts - Type YSO? Transient AT 2023ipb - Transient (Attempt) AT 2023rao - Transient AT 2023rfq - Type YSO? Transient AT 2023srw - CV Type Transient AT 2023uzx - CV Type Transient AT 2023wbv - CV Type Transient AT 2023wox - Type YSO Transient AT 2023xzr - Type YSO Transient     CGCG 420-018 - Galaxy with Transient AT 2023nbs KUG 1227+226 - Galaxy with Type II Supernova 2023bsg M31 - Spiral Galaxy with Type EGN Transient AT 2023veq     NGC 7171 - Spiral Galaxy with Type Ia Supernova 2023yoo     UGC 68 - Spiral Galaxy with Type Ia Supernova 2023xqn UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut       - UGC 3274 w/SN2023cvn attempt failed (due to cloud/bad guiding)      Variable Stars (photometric monitoring) - RX And, TT Ari, BL Lac, GK Per      Nearby Stars (astrometric monitoring) - Groombridge 34

- Attempted All-Night Session (12.9 hrs) interrupted by cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -6°C (min) - CCD Temperature:   -25°/-30°/-35° C - Notes from 2023-12-02 >>     -

12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2023-12-02 (passing through Lyra) Sun Distance 2.37 AU (approaching) Earth Distance 2.58 AU (386.6 million km)		12P/Pons-Brooks - 2023-12-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 70.63 arcsec/hr, Dec -9.60 arcsec/hr)
Annotated CCD Image (50% size, log scale) 2 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 20:38 UT (#1171067-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 20:41 UT (#1171067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
12P/Pons-Brooks - 2023-12-02 Detail		12P/Pons-Brooks - 2023-12-02 Detail
Annotated CCD Image (150% size, log scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 20:41 UT (#1171067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated false-colour CCD Image (150% size, log scale, cropped)) Image details as left
		Annotated false-colour CCD Image (50% size, log scale, cropped)) Image details as above left
Images of 12P/Pons-Brooks on Comets 2023 Page >>

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29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2023-12-03 (passing through Cancer) Sun Distance 6.16 AU (receeding slowly) Earth Distance 5.57 AU (833.3 million km) Note : image shows a light artifact near left hand edge		29P/Schwassmann-Wachmann - 2023-12-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -4.79 arcsec/hr, Dec 0.32 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 9 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 05:31 UT (#1171211-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >>

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32P/Comas Sola - Comet

32P/Comas Sola - 2023-12-02 (passing through Aries) Sun Distance 2.07 AU (approaching) Earth Distance ? This was an unplanned image of comet 32P/Comas Sola. The comet happened to be lying in FOV of a separate target object, AT2022weo (at centre of FOV)		32P/Comas Sola - 2023-12-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -28.44 arcsec/hr, Dec 5.40 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 21:23 UT (#1171096-100) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of 32P/Comas Sola on Comets 2023 Page >>

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61P/Shajn-Schaldach - Comet (attempted observation)

61P/Shajn-Schaldach - 2023-12-03  (passing through Leo) Sun Distance 3.43 AU (receeding) Earth Distance 3.06 AU (457.9 million km) Expected postion of comet (not visible) is shown by white cross-hairs object immediately to the left is a star		61P/Shajn-Schaldach - 2023-12-03  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 7.95 arcsec/hr, Dec -3.17 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 06:00 UT (#1171234-40) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of 61P/Shajn-Schaldach on Comets 2022 Page >>
Images of 61P/Shajn-Schaldach on Comets 2023 Page >>

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103P/Hartley - Comet

103P/Hartley - 2023-12-03 (passing through Hydra) Sun Distance 1.27 AU AU (receeding) Earth Distance 0.57 AU (85.7 million km)		103P/Hartley - 2023-12-03  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 5.73 arcsec/hr, Dec -48.39 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 05:41 UT (#1171223-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 8 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 05:46 UT (#1171223-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 103P/Hartley on Comets 2023 Page >>

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144P/Kushida - Comet

144P/Kushida - 2023-12-02 (passing through Aries) Sun Distance 1.53 AU (approaching) Earth Distance 0.58 AU (86.7 million km)		144P/Kushida - 2023-12-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -3.82 arcsec/hr, Dec -19.27 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 18:43 UT (#1171025-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of 144P/Kushida on Comets 2009 Page >>
Images of 144P/Kushida on Comets 2023 Page >>

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C/2017 K2 (PANSTARRS) - Comet

C/2017 K2 (PANSTARRS) - 2023-12-03 (passing through Monoceros) Sun Distance 4.36 AU (receeding) Earth Distance 3.52 AU (527.2 million km)		C/2017 K2 (PANSTARRS) - 2023-12-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -41.24 arcsec/hr, Dec 13.30 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 01:01 UT (#1171192-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 01:04 UT (#1171192-200) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C2017 K2 (PANSTARRS) on Comets 2021 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2022 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2023 Page >>

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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 - 2023-12-02 (T+989.4d) Image below (2023-12-02.869) was taken 989.4 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +11.99

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 20:53 UT (#1171075-79) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2023-12-02 (T+989.4d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 90s exposure (average combine), 2x2 binning, S Filter 2023-12-02 21:00 UT (#1171080-84) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Cas 2021 on Novae Page >>

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V0390 Cep - Variable Star and Nebula

GCVS V0390 Cep (Cepheus) Nebula feature identified from interesting Point 6 frame from TR37 Mosaic (S1170)

Annotated CCD Image (70% size, square root scale) 7 x 120s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 19:02 UT (#1171033-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nebula surrrounding GCVS V0390 Cep

Negative CCD Image (70% size, square root scale) Image details as above

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AT 2022szi - Transient (Attempt)

AT 2022szi (Andromeda) AT 2022szi (Type: unk) discovered 2022-08-30.322 UT by ZTF Alias: ZTF22abdsaqa Discovery Magnitude 15.94 (r-ZTF Filter)  ( TNS 2022szi )

AT 2022szi - 2023-12-02 (T+459.5d) Image below (2023-12-02.842) was taken 459.5 days after discovery of 2022szi Position of earlier reported transient (no longer visible) is shown by white circle

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 20:19 UT (#1171059-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022szi on Transients 2022 Page >>

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AT 2022weo - Type HPM Transient

AT 2022weo (Aries) AT 2022weo (Type: HPM) discovered 2022-09-27.698 UT by MASTER Alias: MASTER OT J025306.46+165128.4 Discovery Magnitude 12.7 (Clear Filter)  ( TNS 2022weo )

AT 2022weo - 2023-12-02 (T+431.2d) Image below (2023-12-02.889) was taken 431.2 days after discovery of 2022weo Position of reported transient is shown by white cross-hairs Measured Magnitude +12.56 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 21:23 UT (#1171096-100) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022weo on Transients 2022 Page >>

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AT 2023cts - Type YSO? Transient

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AT 2023ipb - Transient (attempted observation)

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AT 2023rao - Transient

AT 2023rao (Pegasus) AT 2023rao (Type: unk) discovered 2023-08-16.381 UT by Gaia Alias: Gaia23bxu Alerting Mag +16.92 (G-Gaia Filter)  (vs Historic Magnitude +17.65) Brightening in Gaia, WISE and UV source  ( TNS 2023rao | Gaia23bxu )

AT 2023rao - 2023-12-02 (T+108.4d) Image below (2023-12-02.821) was taken 108.4 days after discovery of 2023rao Position of transient (faint & stable) is shown by white cross-hairs Measured magnitude +16.36

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 19:52 UT (#1171047-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023rao on Transients 2023 Page >>

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AT 2023rfq - Type YSO? Transient

AT 2023rfq (Cygnus) AT 2023rfq (Type: YSO?) discovered 2023-08-24.114 UT by Gaia Alias: Gaia23cbk Discovery Mag 13.19 (G-Gaia Filter)  (vs Historic Mag 13.49) Brightening in candidate YSO  ( TNS 2023rfq | Gaia23cbk )

AT 2023rfq - 2023-12-02 (T+100.7d) Image below (2023-12-02.810) was taken 100.7 days after discovery of 2023rfq Position of reported transient (distinct, stable) is shown by white cross-hairs Measured magnitude +13.01 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 19:32 UT (#1171042-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023rfq on Transients 2023 Page >>

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AT 2023srw - CV Type Transient

AT 2023srw (Auriga) AT 2023srw (Type: CV) discovered 2023-09-16.369 UT by GEOTS Alias: GEOTS-Balaji-2023-019, TCP J05230786+4420179 Discovery Mag 16.5 (Clear Filter)   ( TNS 2023srw )

AT 2023srw - 2023-12-02 (T+77.5d) Image below (2023-12-02.899) was taken 77.5 days after discovery of 2023srw Position of reported transient (very faint, fading)  is shown by white cross-hairs Measured magnitude +17.68 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 21:37 UT (#1171103-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023srw on Transients 2023 Page >>

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AT 2023uzx - CV Type Transient

AT 2023uzx (Cassiopeia) AT 2023uzx (Type: CV) discovered 2023-10-13.335 UT by Gaia Alias: Gaia23cwq Discovery Mag 11.96 (G-Gaia Filter)  vs Historic Magnitude 12.23 +/- 0.04 SD ~0.2 mag rise in Gaia source, previous events seen  ( TNS 2023uzx | Gaia23cwq )

AT 2023uzx - 2023-12-02 (T+50.7d) Image below (2023-12-02.997) was taken 50.7 days after discovery of 2023uzx Position of reported transient (distinct) is shown by white cross-hairs Measured magnitude +11.53 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:59 UT (#1171163-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023uzx on Transients 2023 Page >>

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AT 2023wbv - CV Type Transient

AT 2023wbv (Perseus) AT 2023wbv (Type: CV) discovered 2023-10-30.032 UT by MASTER Alias: MASTER OT J041624.14+392546.7 Discovery magnitude 11.9 (Clear Filter)  ( TNS 2023wbv )

AT 2023wbv - 2023-12-03 (T+34.0d) Image below (2023-12-03.006) was taken 34.0 days after discovery of 2023wbv Position of reported transient (bright & distinct) is shown by white cross-hairs Measured magntitude +11.57 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 00:10 UT (#1171170-73) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023wbv on Transients 2023 Page >>

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AT 2023wox - Type YSO Transient

AT 2023wox (Orion) AT 2023wox (Type: YSO) discovered 2023-10-28.899 UT by Gaia Alias: Gaia23dah Discovery magnitude 16.18 (G-Gaia Filter) vs Historic Magnitude 16.39 +/- 0.06 (SD) Long slow brightening in YSO  ( TNS 2023wox  | Gaia23dah )

AT 2023wox (T+35.1d) and adjacent nebulosity Star field lying midway between NGC 1977 and M42

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:43 UT (#1171156-59) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2023wox - 2023-12-02 (T+35.1d) Image below (2023-12-02.984) was taken 35.1 days after discovery of 2023wox Position of reported transient (faint) is shown by white cross-hairs Measured magntitude, Transient + Adjacent Star :  +15.58 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:43 UT (#1171156-59) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023wox on Transients 2023 Page >>

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AT 2023xzr - Type YSO Transient

AT 2023xzr (Orion) AT 2023xzr (Type: YSO) discovered 2023-11-08.655 UT by Gaia Alias: Gaia23dcm Discovery magnitude 16.18 (G-Gaia Filter) vs Historic Magnitude 16.39 +/- 0.06 (SD) Long slow brightening in YSO  ( TNS 2023xzr  | Gaia23dcm )

AT 2023xzr (T+24.4d) and adjacent nebulosity in M42

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 00:27 UT (#1171177-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2023xzr - 2023-12-03 (T+24.4d) Image below (2023-12-03.014) was taken 24.4 days after discovery of 2023xzr Position of reported transient (distinct, fading) is shown by white cross-hairs Measured Magntitude  +12.92 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-03 00:27 UT (#1171177-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023xzr on Transients 2023 Page >>

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CGCG 420-018 - Galaxy with Transient AT 2023nbs

CGCG 420-018 with AT 2023nbs (Orion) AT 2023nbs (Type: unk) discovered 2023-07-13.410 UT by ASAS-SN Alias: ASASSN-23fi Discovery magnitude 16.18 (G-Gaia Filter)  ( TNS 2023nbs )

CGCG 420-018 - Galaxy CGCG 420-018 (Alias: PGC 16291, catalog mag +14.8)

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:20 UT (#1171148-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

CGCG 420-018 with AT 2023nbs - 2023-12-02 (T+142.6d) Image below (2023-12-02.967) was taken 142.6 days after discovery of 2023nbs Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:20 UT (#1171148-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023nbs (in CGCG 420-018) on Transients 2023 Page >>

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KUG 1227+226 - Galaxy with Type II Supernova 2023bsg

KUG 1227+226 with SN 2023bsg (Coma Berenices) SN 2023bsg (Type: II) discovered 2023-02-13.922 UT by XOSS Alias: XM121HT Discovery magnitude 16.18 (G-Gaia Filter)  ( TNS 2023bsg )

KUG 1227+226 with SN 2023bsg - 2023-12-03 (T+292.4d) Image below (2023-12-03.276) was taken 292.4 days after discovery of 2023bsg Position of reported transient (not distinguishable, likely faded) is shown by white cross-hairs Poor quality image (poor sky transparency)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 23:20 UT (#1171148-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023bsg (in KUG 1227+226) on Supernova 2023 Page >>

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M31 - Spiral Galaxy with Type EGN Transient AT 2023veq

Nova M31 AT 2023veq (Andromeda) AT 2023veq (Type: EGN) discovered 2023-10-16.987 UT by Robert Fidrich Alias: Vend55, PNV J00433237+4138211, MASTER OT J004332.34+413821.4 Discovery Mag 18.6 (Clear Filter) ( TNS 2023veq )

Nova M31 AT 2023veq - 2023-12-02 (T+46.9d) Image below (2023-12-02.922) was taken 46.9 days after discovery of 2023veq Position of reported transient (no longer visible) is shown by white cross-hairs

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 22:16 UT (#1171117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023veq (in M31) on Transients 2023 Page >>

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NGC 7171 - Spiral Galaxy with Type Ia Supernova 2023yoo

NGC 7171 with SN 2023yoo (Aquarius) SN 2023yoo (Type: Ia) discovered 2023-11-28.035 UT by ATLAS Alias: ATLAS23wjr, ZTF23abryylt, Gaia23dsz Discovery Magnitude 17.34 (orange-ATLAS Filter)  ( TNS 2023yoo | Gaia23dsz ) Gaia, 2023-12-22 06:47,  Mag 15.18 (T+24.3d) Gaia, 2024-01-02 12:53,  Mag 15.65 (T+35.5d)

NGC 7171 with SN 2023yoo - 2023-12-02 (T+4.7d) Image below (2023-12-02.756) was taken 4.7 days after discovery of 2023yoo Position of earlier reported SN (distinct) is indicated by white cross-hairs. Measured Magnitude +15.46 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 18:14 UT (#1171006-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023yoo (in NGC 7171) on Supernova 2023 Page >>

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UGC 68 - Spiral Galaxy with Type Ia Supernova 2023xqn

UGC 68 with SN 2023xqn (Pegasus) SN 2023xqn (Type: Ia) discovered 2023-11-13.222 UT by ATLAS Alias: ATLAS23vno Discovery magnitude 18.17 (cyan-ATLAS Filter)  ( TNS 2023xqn )

UGC 68 - Spiral Galaxy UGC 69 (alias: PGC 617, catalog mag 15.1)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 21:56 UT (#1171110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 68 with SN 2023xqn - 2023-12-02 (T+19.7d) Image below (2023-12-02.908) was taken 19.7 days after discovery of 2023xqn Position of reported SN (not clearly distinguishable) is shown by white cross-hairs Measure Magnitude +14.74 (Clear Filter) - Nucleus + SN Small adjacent galaxy PGC 73260 (catalog mag +17.0)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 21:56 UT (#1171110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023xqn (in UGC 68) on Supernova 2023 Page >>

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UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut

UGC 3174 with SN 2023mut (Orion) SN 2023mut (Type: IIb) discovered 2023-07-11.180 UT by ASAS-SN  / GOTO Group Alias: ASASSN-23fh Discovery Magnitude 15.2 (g-SLOAN Filter)  ( TNS 2023mut )

UGC 3174 with SN 2023mut - 2023-12-02 (T+144.8d) Image below (2023-12-02.951) was taken 144.8 days after discovery of 2023mut Position of reported SN (distinct, fading) is indicated by white cross-hairs. Measured Magnitude +16.19 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 22:58 UT (#1171140-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023mut (in UGC 3174) on Supernova 2023 Page >>

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