2021 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...

AT2021itx (= Gaia21btc) (= MASTER OT J031055.01+472216.3) ATEL 14531 discovered 2021/04/02.785 by MASTER robotic Net
Found in PGC 2297096 at R.A. = 03h10m54s.972, Decl. = +47°22'16".90
Located 3".2 east and 24".1 south of the center of PGC 2297096 (Discovery image)
Mag 16.1:4/7, Type CV (References: Gaia observations)

AT2021ilb, TNS discovered 2021/04/05.815 by Lorenzo Siciliano
Found in M61 at R.A. = 12h21m53s.124, Decl. = +04°28'08".70
Located 0".0 east and 0".0 north of the center of M61
Mag 16.0:4/5, Type unconfirmed

AT2021gwt, TNS discovered 2021/03/22.801 by Shunji Sasaki
Found in PGC 86310 at R.A. = 13h49m04s.000, Decl. = -30°48'50".00
Located 0".0 east and 0".0 north of the center of PGC 86310
Mag 15.0:3/22, Type MP (MP 860 Ursina)

AT2021cek, TNS discovered 2021/02/06.501 by Akihiro Nakayama
Found in NGC 4041 at R.A. = 12h02m09s.500, Decl. = +62°08'08".50
Located 0".0 east and 0".0 north of the center of NGC 4041 (Discovery image)
Mag 16.5:2/6, Type unconfirmed

AT2021bxk, TNS discovered 2021/02/05.000 by Arttu Sainio
Found in an anonymous galaxy at R.A. = 17h38m21s.306, Decl. = -31°47'00".90
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 11.9:2/5, Type Nova?

AT2021bkv (= XM48HT), TNS discovered 2021/01/31.675 by Xingming Observatory Sky Survey (XOSS) at R.A. = 04h53m16s.820, Decl. = +38°16'30".20 Mag 16.5:1/31, Type CV

AT2021acn (= AHTS-2021-001) (= ZTF19aaeidsm), TNS discovered 2021/01/11.194 by AHTS at R.A. = 06h50m48s.840, Decl. = +18°15'50".10 Mag 16.6:1/11, Type AGN (Claudio Balcon image) (References: ZTF observations)



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