Extragalactic Novae - 2023

Much of this data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 2023 updates to this page is available.

Announced Extragalactic Novae will have a link on the main page that points to this one.   Please note that I do not keep track of galactic novae.  

For current Novae, please see the main Extragalactic Novae page

Nova M31 2023-12f? (= PNV J00441073+4145293), CBAT TOCP discovered 2023/12/26.749 by unknown
Found in M31 at R.A. = 00h44m10s.730, Decl. = +41°45'29".30
Located 970".5 east and 1760".8 north of the center of M31
Mag 18.8:12/26, Type unknown

Nova M31 2023-12e? (= PNV J00424472+4115477), CBAT TOCP discovered 2023/12/19.138 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m44s.720, Decl. = +41°15'47".70
Located 4".5 east and 20".8 south of the center of M31 (Discovery image)
Mag 18.9:12/19, Type unknown (References: ATEL 16392)

AT2023aagf, (= Nova M31 2023-12d?) (= PNV J00423816+4110248), ATEL 16371 discovered 2023/12/07.186 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m38s.160, Decl. = +41°10'24".80
Located 69".5 west and 343".7 south of the center of M31 (Discovery image)
Mag 18.4:12/23 (17.3:12/13), Type EGN (References: AstroNote 2024-31, TNS, CBAT TOCP)

AT2023ysz (= ATLAS23wne) (= PS23ldw), TNS discovered 2023/12/04.633 by ATLAS
Found in M94 at R.A. = 12h50m56s.645, Decl. = +41°06'15".66
Located 40".5 east and 57".8 south of the center of M94 (Discovery image) (Koichi Itagaki image)
Mag 18.7:12/4, Type EGN (z=0.0009) (zhost=0.001027) (References: AstroNote 2023-327)

AT2023yqt (= PSP23Q) (= PNV J00422755+4111086) (= Gaia23dmh), TNS discovered 2023/12/03.515 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m27s.492, Decl. = +41°11'08".20
Located 189".0 west and 300".0 south of the center of M31 (Discovery image) (Klaus Wenzel image) (LCOGT image) (Achim Sucker image)
Mag 18.5:12/6 (16.2:12/3), Type EGN (References: AstroNote 2024-31, ATEL 16359, ATEL 16363, ATEL 16368, CBAT TOCP, Gaia observations)

AT2023ypg (= PSP23O) (= PNV J01325400+3021387) (= Gaia23dnw), TNS discovered 2023/11/29.609 by Xingming Observatory Sky Survey (XOSS)
Found in M33 at R.A. = 01h32m53s.969, Decl. = +30°21'38".16
Located 735".2 west and 1078".1 south of the center of M33 (Discovery image)
Mag 18.6:12/6 (18.2:11/29), Type EGN (References: CBAT TOCP, Gaia observations)

AT2023yoa (= PSP23N) (= PNV J00430932+4115416) (= Nova M31 2023-11f), TNS discovered 2023/11/27.831 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h43m09s.320, Decl. = +41°15'41".60
Located 282".0 east and 27".0 south of the center of M31 (Discovery image) (Hornoch discovery image compared with NM311310c) (MASTER image) (Katsumi Yoshimoto image) (George Cary image) (Nick James image)
Mag 17.2:11/30 (16.2:11/27), Type EGN (Note: Recurrent nova Nova M31 2013-10c) (References: AstroNote 2024-31, ATEL 16354, ATEL 16355, ATEL 16526, CBAT TOCP)

Nova M31 2023-11e? (= PNV J00420223+4048350), CBAT TOCP discovered 2023/11/26.905 by unknown
Found in M31 at R.A. = 00h42m02s.230, Decl. = +40°48'35".00
Located 476".2 west and 1653".5 south of the center of M31
Mag 18.6:11/26, Type unknown

AT2023ync (= Vend56) (= PNV J00425313+4118322), TNS discovered 2023/11/27.135 by Robert Fidrich
Found in M31 at R.A. = 00h42m53s.127, Decl. = +41°18'32".27
Located 99".2 east and 143".7 north of the center of M31
Mag 18.5:11/27, Type unknown (References: CBAT TOCP)

AT2023yij (= OMB-PNV21) (= PNV J00424587+4121379) (= Gaia23dnb), TNS discovered 2023/11/23.799 by Castellani Flavio (ISSP)
Found in M31 at R.A. = 00h42m45s.749, Decl. = +41°21'37".55
Located 17".4 east and 329".4 north of the center of M31 (Jordi Camarasa image)
Mag 19.3:12/18 (16.6:11/25), Type EGN (zhost=-0.001000) (References: AstroNote 2024-31, CBAT TOCP, Gaia observations)

AT2023xwo (= GSNST-ef), TNS discovered 2023/11/16.119 by GSNST
Found in M31 at R.A. = 00h40m03s.390, Decl. = +40°43'38".50
Located 1821".9 west and 1950".0 south of the center of M31
Mag 19.8:11/23 (19.5:11/16), Type unknown (z=-0.001000) (References: AstroNote 2024-31, AstroNote 2023-313)

AT2023xvj (= GIT231115aa) (= GRB 231115A), TNS discovered 2023/11/15.700 by GIT
Found in M82 at R.A. = 09h56m00s.080, Decl. = +69°40'29".19
Located 38".3 east and 16".6 south of the center of M82
Mag 19.2:11/15, Type unknown (zhost=0.000900)

Nova M31 2023-11a? (= PNV J00442785+4122283), CBAT TOCP discovered 2023/11/05.937 by unknown
Found in M31 at R.A. = 00h44m27s.850, Decl. = +41°22'28".30
Located 1166".2 east and 379".8 north of the center of M31
Mag 19.8:11/5, Type unknown

AT2023wrj, TNS discovered 2023/10/12.692 by Jingyuan Zhao and Weihao Wang
Found in M31 at R.A. = 00h41m06s.220, Decl. = +41°10'41".90
Located 1160".0 west and 326".0 south of the center of M31 (Discovery image)
Mag 20.7:11/3, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2023wot (= PNV J00421620+4116251), TNS discovered 2023/10/26.619 by Jingyuan Zhao and Weihao Wang
Found in M31 at R.A. = 00h42m16s.200, Decl. = +41°16'25".10
Located 317".5 west and 16".9 north of the center of M31 (Discovery images) (Hornoch discovery image)
Mag 18.9:11/4, Type unknown (zhost=-0.001000) (References: ATEL 16319)

AT2023wnh (= OMB-TNS01) (= TCP J00434870+4132439) (= ZTF23abighaj) (= Gaia23dmi), TNS discovered 2023/11/03.795 by F.Castellani, R.Belligoli and V.Andreoli (ISSP)
Found in M31 at R.A. = 00h43m48s.622, Decl. = +41°32'44".23
Located 726".0 east and 996".0 north of the center of M31
Mag 19.1:11/3, Type unknown (Reference: CBAT TOCP, ZTF observations, Gaia observations)

AT2023wck (= PNV J00435642+4113559), TNS discovered 2023/10/26.619 by Jingyuan Zhao and Weihao Wang
Found in M31 at R.A. = 00h43m56s.420, Decl. = +41°13'55".90
Located 813".0 east and 132".0 south of the center of M31 (Discovery image)
Mag 19.2:10/30, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2023vpw (= PNV J00410810+4115046), TNS discovered 2023/10/21.628 by Jingyuan Zhao and Weihao Wang
Found in M31 at R.A. = 00h41m08s.100, Decl. = +41°15'04".60
Located 1085".0 west and 63".9 south of the center of M31 (Discovery image)
Mag 21.0:10/21, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2023veq (= Vend55) (= PNV J00433237+4138211) (= MASTER OT J004332.34+413821.4), TNS discovered 2023/10/16.987 by Robert Fidrich
Found in M31 at R.A. = 00h43m32s.370, Decl. = +41°38'21".1939
Located 539".6 east and 1332".4 north of the center of M31 (Discovery image) (Klemens Waldhör context image) (Klemens Waldhör image) (Klemens Waldhör image) (Klaus Wenzel image) (Klemens Waldhör image)
Mag 18.2:11/11 (16.7:10/10), Type EGN (z=-0.001) (References: AstroNote 2024-31, CBAT TOCP)

AT2023uri (= PSP23K) (= PNV J00430061+4119400) (= M31N 2023-10d), TNS discovered 2023/10/11.592 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h43m00s.610, Decl. = +41°19'40".00
Located 183".5 east and 211".5 north of the center of M31 (Discovery image) (Hornoch Discovery image) (Rafael Benavides image) (Tom Wildoner image)
Mag > 19.5:10/19 (15.1:10/14), Type EGN (References: AstroNote 2024-31, AstroNote 2023-271, ATEL 16285, ATEL 16290, ATEL 16291, ATEL 16293, CBAT TOCP)

AT2023uiq (= XM115MZ) (= MASTER OT J004148.67+413121.6) (PNV J00414884+4131205) (= PNV J00414869+4131212) (= ZTF23abiwrwo) (= ATLAS23twx), TNS discovered 2023/10/07.766 by MASTER
Found in M31 at R.A. = 00h41m48s.698, Decl. = +41°31'21".25
Located 624".3 west and 912".0 north of the center of M31 (Discovery image)
Mag 19.9:11/13 (16.3:10/10), Type EGN (zhost=-0.001000) (References: AstroNote 2024-31, ATEL 16286, ATEL 16292, CBAT TOCP, ZTF Observations ALERCE page, Antares observations FINK page)

Nova M31 2023-10b? (= PNV J00402360+4122063), CBAT TOCP discovered 2023/10/01.757 by Gianluca Masi
Found in M31 at R.A. = 00h40m23s.600, Decl. = +41°22'06".30
Located 1585".4 west and 357".8 north of the center of M31
Mag 19.5:10/1, Type unknown

AT2023ufk (= Nova M31 2023-10a?) (= ZTF23abhxvun) (= PNV J00402967+4051414), CBAT TOCP discovered 2023/10/01.757 by Gianluca Masi
Found in M31 at R.A. = 00h40m29s.682, Decl. = +40°51'41".89
Located 1522".9 west and 1467".1 south of the center of M31
Mag 18.2:10/4 (17.9:10/1), Type unknown (References: TNS, ZTF observations)

AT2023ufj (= ATLAS23tru) (= ZTF23abigaao) (= AT2023uyl) (= PNV J00404558+4059383), TNS discovered 2023/10/06.431 by ATLAS
Found in M31 at R.A. = 00h40m42s.527, Decl. = +40°59'38".98
Located 1376".1 west and 989".6 south of the center of M31
Mag 20.0:11/6 (15.9:10/11), Type EGN (z=-0.001370) (References: CBAT TOCP ZTF observations)

AT2023ttu (= PNV J00423617+4117178) (= ATLAS23tik), TNS discovered 2023/09/29.359 by Yuqing Ren, Jingyuan Zhao
Found in M31 at R.A. = 00h42m36s.173, Decl. = +41°17'18".08
Located 91".9 west and 69".6 north of the center of M31 (Discovery image) (Las Cumbres obs image) (G. Marrero-Ramallo discovery image)
Mag 16.1:9/29, Type EGN (References: ATEL 16263, ATEL 16265, CBAT TOCP)

AT2023tmh (= Jingyuan N12) (= PNV J00432012+4113041) (= ATLAS23tfm), TNS discovered 2023/09/23.787 by Jingyuan Zhao and Weihao Wang
Found in M31 at R.A. = 00h43m20s.153, Decl. = +41°13'03".67
Located 404".0 east and 183".0 south of the center of M31 (Discovery image)
Mag 19.7:9/23, Type Other (zhost=-0.001000) (References: CBAT TOCP)

AT2023tkw (= GIT230919aa), TNS discovered 2023/09/19.895 by Ravi Kumar
Found in M31 at R.A. = 00h41m24s.250, Decl. = +41°08'04".74
Located 903".7 west and 483".8 south of the center of M31
Mag 20.0:9/19, Type FeII (zhost=-0.001000) (References: ATEL 16311, AstroNote 2023-255)

Nova M81 2023-09a? (= PNV J09553325+6903128), ATEL 16248 discovered 2023/09/20.115 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m33s.250, Decl. = +69°03'12".80
Located 0".4 east and 42".3 south of the center of M81
Mag 19.5:9/20, Type unknown (References: CBAT TOCP)

AT2023sqw, TNS discovered 2023/09/15.249 by Chris Spratt
Found in NGC 205 at R.A. = 00h40m36s.988, Decl. = +41°43'24".29 (= M110)
Located 167".0 east and 137".2 north of the center of NGC 205 (Discovery image (Mirror)
Mag 17.5:9/15, Type unknown (zhost=-0.001000)

AT2023sfp (= ZTF23abchhah) (= PNV J00430855+4108516) (= PNV J00430855+4108517), discovered 2023/09/15.856 by Zwicky Transient Facility (ZTF)
Found in M31 at R.A. = 00h43m08s.635, Decl. = +41°08'50".68
Located 274".3 east and 437".8 south of the center of M31
Mag 19.1:9/15, Type unknwon (References: CBAT TOCP, CBAT TOCP (dupe), ZTF observations)

AT2023skp (= GSNST-23ac), TNS discovered 2023/09/14.276 by GSNST
Found in M31 at R.A. = 00h42m50s.500, Decl. = +41°16'44".62
Located 69".6 east and 36".1 north of the center of M31
Mag 19.5:9/14, Type unknown (zhost=-0.001000)

AT2023qum (= PNV J00390711+4034126), TNS discovered 2023/08/25.850 by Robert Fidrich
Found in M31 at R.A. = 00h39m07s.110, Decl. = +40°34'12".66
Located 2462".0 west and 2515".9 south of the center of M31
Mag 19.4:8/25, Type unknown (References: CBAT TOCP)

AT2023oom (= PNV J00465260+4201428), TNS discovered 2023/08/05.375 by Robert Fidrich
Found in M31 at R.A. = 00h46m52s.605, Decl. = +42°01'42".89
Located 2782".9 east and 2734".4 north of the center of M31 (Dicovery image mirror)
Mag 19.5:8/1, Type EGN (References: ATEL 16415, CBAT TOCP)

AT2023trk (= ATLAS23tfn) (= PNV J00441143+4120239), TNS discovered 2023/09/26.461 by ATLAS
Found in M31 at R.A. = 00h44m11s.459, Decl. = +41°20'23".74
Located 982".1 east and 255".4 north of the center of M31 (XOSS image) (Carlos Segarra image) (Rafael Benavides image) (Carlos Segarra Garcia image facebook)
Mag 18.8:10/6 (17.4:9/26), Type EGN (References: CBAT TOCP)

AT2023nou (= GEOTS-Balaji-2023-008) (= PNV J01335643+3043357), TNS discovered 2023/07/20.435 by GEOTS
Found in M33 at R.A. = 01h33m56s.430, Decl. = +30°43'35".70
Located 71".5 east and 238".9 north of the center of M33 (Discovery image)
Mag 16.7:7/20, Type unknown (References: CBAT TOCP)

AT2023mxi (= PSP23H) (= MASTER OT J004341.86+405222.7) (= PNV J00434177+4052237) (= ZTF23aarlxdf), TNS discovered 2023/07/12.859 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h43m41s.770, Decl. = +40°52'23".70
Located 647".7 east and 1424".8 south of the center of M31 (Discovery image)
Mag 20.2:7/28 (16.1:7/12), Type EGN (zhost=-0.001000) (References: CBAT TOCP, ZTF observations)

2023lyd (= NM312306c) (= MASTER OT J004154.18+411015.9) ATEL 16095 discovered 2023/06/25.983 by MASTER
Found in M31 at R.A. = 00h41m54s.200, Decl. = +41°10'16".60
Located 565".0 west and 351".9 south of the center of M31 (Discovery image) (A. Valcheva image)
Mag 18.2:7/11 (17.6:6/25), Type EGN (z=-0.00017) (References: ATEL 16127, TNS)

AT2023kdb (= Barlad V2) (= PNV J00430970+4129461), TNS discovered 2023/06/09.034 by Dumitru Ciprian
Found in M31 at R.A. = 00h43m09s.700, Decl. = +41°29'46".10
Located 285".6 east and 817".6 north of the center of M31
Mag 16.2:6/9, Type unknown (References: CBAT TOCP)

Nova M31 2023-06a? (= PNV J00424628+4116210), ATEL 16074 discovered 2023/06/02.004 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m46s.280, Decl. = +41°16'21".00
Located 22".1 east and 12".5 north of the center of M31 (Discovery image)
Mag 16.5:6/2, Type unknown (References: CBAT TOCP)

AT2023ksu (= Nova M31 2023-05b?) (= PNV J00421981+4107048) (= ZTF23aaluzap), CBAT TOCP discovered 2023/05/24.476 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m19s.791, Decl. = +41°07'04".45
Located 276".7 west and 543".7 south of the center of M31 (Discovery image)
Mag 18.1:5/28 (17.6:5/24), Type unknown (References: ATEL 16058, TNS, ZTF observations)

AT2023hrm (= XM98MZ) (= PNV J00424488+4115033), TNS discovered 2023/05/07.872 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m44s.880, Decl. = +41°15'03".30
Located 6".4 east and 65".7 south of the center of M31 (XOSS discovery image) (Hornoch discovery image)
Mag 16.5:5/8, Type unknown (zhost=-0.001000) (References: ATEL 16032, CBAT TOCP)

AT2023gvz (= MASTER OT J004240.02+410334.1), TNS discovered 2023/04/26.022 by MASTER
Found in M31 at R.A. = 00h42m40s.020, Decl. = +41°03'34".10
Located 0".0 east and 0".0 north of the center of M31
Mag 16.9:4/26, Type unknown

Nova M31 2023-03a? (= PNV J00423893+4126379), ATEL 15965 discovered 2023/03/27.793 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m38s.930, Decl. = +41°26'37".90
Located 60".7 west and 629".4 north of the center of M31 (Discovery image)
Mag 16.6:3/27, Type unknown (References: CBAT TOCP)

AT2023cqt (= ATLAS23ddk), TNS discovered 2023/03/01.002 by ATLAS
Found in M64 at R.A. = 12h56m47s.063, Decl. = +21°39'45".84
Located 47".7 east and 72".9 south of the center of M64 (Giancarlo Cortini image)
Mag 18.8:3/1, Type EGN (z=0.001) (zhost=0.001364) (References: AstroNote 2023-53)

AT2023cnj (= XM97MZ) (= PNV J00423575+4116167), TNS discovered 2023/02/24.565 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m35s.750, Decl. = +41°16'16".70
Located 97".0 west and 8".0 north of the center of M31 (Discovery image)
Mag 18.7:2/24, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2023brc (= XM96MZ) (= PNV J00422147+4112452) (= Gaia23azl), TNS discovered 2023/02/13.558 by Xingming Observatory Sky Survey (XOSS); K. Hornoch
Found in M31 at R.A. = 00h42m21s.468, Decl. = +41°12'45".01
Located 257".8 west and 203".6 south of the center of M31 (XOSS discovery image) (Hornoch discovery image) (George Carey image)
Mag 18.2:3/5 (18.0:2/13), Type unknown (zhost=-0.001000) (References: CBAT TOCP, ATEL 15901, ATEL 15926, Gaia observations)

AT2023bnl (= Nova M81 2023-02a?) (= OMB-PNV20) (= PNV J09560893+6902443) TNS discovered 2023/02/10.934 by Kamil Hornoch et al.; ISSP
Found in M81 at R.A. = 09h56m08s.930, Decl. = +69°02'44".30
Located 192".0 east and 71".0 south of the center of M81 (Sofia U image)
Mag 17.3:2/17, Type unknown (References: ATEL 15912, ATEL 15898, ATEL 15896, CBAT TOCP)

AT2023bne (= OMB-PNV19) (= PNV J01345297+3047145), TNS discovered 2023/02/10.791 by F.Castellani, R.Belligoli, V.Andreoli
Found in M33 at R.A. = 01h34m52s.970, Decl. = +30°47'14".50
Located 800".5 east and 457".7 north of the center of M33 (Andrea Mantero image) (Las Cumbres image)
Mag 16.8:2/13, Type EGN (References: ATEL 15899, CBAT TOCP)

Nova M31 2023-02a? (= PNV J00423790+4112499), CBAT TOCP discovered 2023/02/07.754 by F.Castellani, R.Belligoli, V.Andreoli
Found in M31 at R.A. = 00h42m37s.900, Decl. = +41°12'49".90
Located 69".0 west and 196".0 south of the center of M31
Mag 18.0:2/7, Type unknown

AT2023ps (= OMB-PNV18) (= PNV J00424623+4117357), TNS discovered 2023/01/14.767 by Raffaele Belligoli (ISSP)
Found in M31 at R.A. = 00h42m46s.230, Decl. = +41°17'35".70
Located 21".5 east and 87".2 north of the center of M31
Mag 19.3:1/14, Type unknown (References: CBAT TOCP)

AT2023ax (= XM94MZ) (= PNV J00430924+4117022) (= ZTF23aaaairl), TNS discovered 2023/01/06.516 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h43m09s.223, Decl. = +41°17'02".21
Located 280".7 east and 53".7 north of the center of M31 (Discovery image)
Mag 19.6:2/9 (17.1:1/12), Type FeII (zhost=-0.001000) (References: ATEL 15850, ATEL 15867, ATEL 15926, ZTF observations, CBAT TOCP)

AT2023U (= XM93MZ) (= PNV J00423797+4117130) (= M31N 2023-01a) (= Gaia23afw), TNS discovered 2023/01/03.576 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m37s.944, Decl. = +41°17'13".06
Located 71".9 west and 64".9 north of the center of M31 (XOSS discovery image) (Hornoch discovery image) (Las Cumbres image)
Mag 17.9:1/11 (17.6:1/3), Type unknown (zhost=-0.001000) (References: ATEL 15842, ATEL 15845, Gaia observations)

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