2023 Supernova Boneyard

Welcome to the Boneyard.   On this page you will find entries for objects that have been confirmed as Cataclysmic variables, asteriods (otherwise known as Vermin of the sky), or some other non extragalactic event.   Why keep them around? Because you never know when something like this will come back to life...

AT2023aaon, TNS discovered 2023/12/20.606 by Naoki Morimoto
Found in NGC 4567 at R.A. = 12h36m34s.000, Decl. = +11°15'49".00
Located 19".0 east and 20".2 north of the center of NGC 4567 (Discovery image)
Mag 14.0:12/20, Type unconfirmed

AT2023zpf, TNS discovered 2023/12/09.421 by Hiroshi Okuno
Found in NGC 827 at R.A. = 02h08m52s.720, Decl. = +07°58'25".40
Located 52".6 west and 8".1 north of the center of NGC 827
Mag 17.8:12/9, Type MP (zhost=0.011555) (Note: MP (26373) 1999 CZ74)

AT2023ygp (= ASASSN-23ii) (= OGLE-LMC-LPV-07945), TNS discovered 2023/11/21.990 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in LMC at R.A. = 04h56m45s.149, Decl. = -68°33'17".68
Located 8590".1 west and 4324".3 north of the center of LMC (John Stevenson image)
Mag 14.3:11/21, Type CV (References: ATEL 16369)

Nova M33 2023-11a? (= PNV J01342140+3023266), CBAT TOCP discovered 2023/11/05.969 by unknown
Found in M33 at R.A. = 01h34m21s.400, Decl. = +30°23'26".60
Located 0".0 east and 0".0 north of the center of M33
Mag 18.4:11/5, Type unconfirmed

AT2023see, TNS discovered 2023/09/12.699 by Shuji Tokuoka
Found in CGCG 462-013 at R.A. = 02h26m55s.290, Decl. = +20°31'57".50
Located 0".0 east and 0".0 north of the center of CGCG 462-013 (Discovery image)
Mag 16.9:9/12, Type HP (zhost=0.014060)

AT2023pow, TNS discovered 2023/08/15.786 by Masayuki Iwamoto
Found in NGC 1640 at R.A. = 04h42m15s.000, Decl. = -20°26'04".00
Located 0".0 east and 0".0 north of the center of NGC 1640
Mag 15.2:8/15, Type unconfirmed (References: ATEL 16203, SN 1990aj)

AT2023och, TNS discovered 2023/07/26.789 by Seiichiro Naito
Found in NGC 1461 at R.A. = 03h48m26s.000, Decl. = -16°23'08".00
Located 0".0 east and 0".0 north of the center of NGC 1461 (Discovery image)
Mag 14.5:7/26, Type unconfirmed (zhost=0.004893)

AT2023kya, TNS discovered 2023/06/16.468 by Ella Sanders Kot
Found in NGC 6946 at R.A. = 20h34m56s.108, Decl. = +60°12'03".86
Located 28".2 east and 169".8 north of the center of NGC 6946 (Discovery image) (Klaus Wenzel image unconfirmed)
Mag 16.9:6/16, Type unconfirmed (zhost=0.000160)

AT2023hpa (= SNhunt453), TNS discovered 2023/05/02.187 by Catalina Real-Time Transient Survey and Qintao Wang
Found in LSBC F560-04 at R.A. = 07h46m16s.872, Decl. = +18°22'36".84
Located 24".7 west and 29".6 north of the center of LSBC F560-04 (Discovery image)
Mag 19.2:5/2, Type unconfirmed (zhost=0.052600) (References: AstroNote 2023-134)

AT2023cmv (= TCP J03400682+4809123) (= Gaia23bbk), TNS discovered 2023/02/23.441 by Tadashi Kojima at R.A. = 03h40m06s.533, Decl. = +48°09'10".37 Mag 15.5:3/9 (14.0:2/23), Type CV (References: CBAT TOCP, Gaia observations)

AT2023clx (= ASASSN-23bd) (= ZTF18aabkvpi), TNS discovered 2023/02/22.210 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 3799 at R.A. = 11h40m09s.444, Decl. = +15°19'39".04
Located 0".0 east and 0".0 north of the center of NGC 3799 (Eliot Herman image) (Manfred Mrotzek image) (Manfred Mrotzek image)
Mag 17.9:4/2 (16.1:3/15), Type TDE (zhost=0.011070)

AT2023cy, TNS discovered 2023/01/08.560 by Koichi Itagaki
Found in NGC 2713 at R.A. = 08h57m30s.890, Decl. = +02°54'32".50
Located 155".6 east and 44".2 south of the center of NGC 2713 (Discovery image)
Mag 15.7:1/8, Type MP (References: SN 1968E)

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