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...

AT2021ahtq, TNS discovered 2021/09/21.981 by Walter Robledo at R.A. = 08h22m11s.089, Decl. = +89°21'19".81 Mag 14.3:9/21, Type CV

AT2021agxs (= TCP J07094936+1412280), TNS discovered 2021/12/28.532 by Tadashi Kojima at R.A. = 07h09m49s.360, Decl. = +14°12'28".00 Mag 13.6:12/28, Type CV

AT2021agbu (= AT2021agbo), TNS discovered 2021/12/03.565 by Hidenori Nohara
Found in NGC 1325A at R.A. = 03h24m48s.140, Decl. = -21°20'24".00
Located 0".0 east and 0".0 north of the center of NGC 1325A (Discovery image)
Mag 17.5:12/3, Type HPM (zhost=0.004447)

AT2021afpo (= ASASSN-21vf), ATEL 15082 discovered 2021/11/27.340 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 01h00m48s.480, Decl. = +13°06'38".99
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 18.0:11/27, Type AGN (z=0.2129) (References: AstroNote 2021-311, TNS)

AT2021aetv (= RHN-001) (= GSC 0015-0388), TNS discovered 2021/11/12.220 by Robert Nelson at R.A. = 00h59m11s.730, Decl. = +02°58'47".05 Mag 10.9:11/12, Type CV

AT2021aczn, TNS discovered 2021/11/01.000 by Jordi Camarasa
Found in NGC 1569 at R.A. = 04h30m49s.000, Decl. = +64°50'52".00
Located 0".0 east and 0".0 north of the center of NGC 1569 (Odd Trondal image) (Enrico Prosperi image)
Mag 14.0:11/1, Type HPM (References: PS1 reference images)