Bright Supernovae - 2020

This data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 2020 updates to this page is available.

This is a partial list of the SN discovered in 2020. Since 2020 is still ongoing, please look at the main page for the latest data.   In previous years I tried to keep the yearly archive alphabetically sorted by CBAT supernova name.   Since that is no longer applicable, I am sorting this archive by "first observed" date, which I have listed as the discovery date.   Note that Extra galactic Novae have been moved to a special Extra galactic novae page.   Mistakes (Galactic variables, asteroids, unconfirmed, etc) are in the boneyard.   I also maintain an archive of the updates.

AT2020afbs, TNS discovered 2020/10/11.840 by Robledo at R.A. = 01h11m47s.180, Decl. = -83°37'51".55 Mag 21.1:10/11, Type unknown

AT2020afay (= MUSSES2020J), TNS discovered 2020/12/11.310 by MUSSES at R.A. = 02h36m10s.520, Decl. = -03°10'59".00 Mag 25.9:12/11, Type unknown

2020aeps (= XM25HT) (= ZTF20adagenq) (= Gaia21adn), ATEL 14313 discovered 2020/12/29.904 by Xingming Observatory Sky Survey (XOSS)
Found in KUG 1206+328 at R.A. = 12h08m47s.430, Decl. = +32°32'07".58
Located 1".8 east and 7".4 south of the center of KUG 1206+328
Mag 18.0:2/24 (16.1:1/11), Type Ia (z=0.0244) (z=0.024400) (References: ZTF observations, TNS, Gaia observations)

2020adox (= ASASSN-20qk) (= ATLAS20bhnl), ATEL 14381 discovered 2020/12/24.270 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 04h53m40s.321, Decl. = -31°09'10".18
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.5:12/24, Type Ia (z=0.074) (References: TNS, ATEL 14366)

2020adow (= ASASSN-20qj), ATEL 14366 discovered 2020/12/26.410 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in KUG 0830+278 at R.A. = 08h33m42s.266, Decl. = +27°42'43".83
Located 0".0 east and 0".0 north of the center of KUG 0830+278 (Discovery image) (Andrea Mantero image) (Enrico Prosperi image)
Mag 17.1:3/3 (16.2:12/26), Type Ic-BL (z=0.0074) (zhost=0.007505) (References: AstroNote 2021-47, TNS)

2020adnx (= MASTER OT J030555.49+413631.1) (= ATLAS20bjhy) (= Gaia20fxw), TNS discovered 2020/12/24.859 by MASTER
Found in UGC 2528 at R.A. = 03h05m55s.530, Decl. = +41°36'31".36
Located 0".0 east and 0".0 north of the center of UGC 2528 (Gianpiero Locatelli image) (Carols Segarra image) (Odd Trondal image)
Mag 19.3:3/22 (17.2:12/24), Type II (z=0.021001) (References: Gaia observations)

AT2020adnv (= SNhunt436), TNS discovered 2020/12/24.124 by Catalina Real-Time Transient Survey and Mirco Villi
Found in PGC 1374835 at R.A. = 04h36m00s.288, Decl. = +10°07'27".12
Located 4".7 east and 19".4 north of the center of PGC 1374835 (Discovery image)
Mag 20.3:12/24, Type unknown (zhost=0.028900)

2020adnu (= ASASSSN-20qi), ATEL 14366 discovered 2020/12/22.280 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 11h38m08s.320, Decl. = -32°51'07".87
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.2:12/22, Type Ia (z=0.031) (zhost=0.030625) (References: AstroNote 2021-6, TNS)

2020admb (= JVAR20a), TNS discovered 2020/12/22.163 by Vázquez Ramió
Found in MCG +9-14-52 at R.A. = 08h32m25s.992, Decl. = +56°27'53".64
Located 0".0 east and 0".0 north of the center of MCG +9-14-52 (Discovery image)
Mag 21.1:12/22, Type Ia (zhost=0.044000)

2020adlh (= ASASSN-20qh) (= Gaia20fvy), ATEL 14366 discovered 2020/12/21.944 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 13h38m26s.115, Decl. = -31°15'50".03
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.0:12/22, Type Ia (z=0.036) (zhost=0.038013) (References: AstroNote 2021-6, TNS, Gaia observations)

2020adkz (= ASASSN-20qg) (= Gaia21agj), ATEL 14366 discovered 2020/12/22.480 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in KUG 1134+193 at R.A. = 11h37m30s.155, Decl. = +19°02'33".77
Located 0".0 east and 0".0 north of the center of KUG 1134+193 (Discovery image) (Odd Trondal image)
Mag 17.4:1/12 (17.2:12/22), Type Ia (z=0.029) (zhost=0.029603) (References: AstroNote 2020-264, Gaia observations, TNS)

2020acma (= ATLAS20bhnw) (= Gaia21ajv), AstroNote 2020-254 discovered 2020/12/12.592 by ATLAS
Found in ESO 437-G19 at R.A. = 10h37m57s.860, Decl. = -28°54'30".78
Located 21".8 east and 4".2 south of the center of ESO 437-G19 (Fabio Feijo image)
Mag 17.2:2/6 (15.9:12/16), Type Ia (z=0.014) (zhost=0.013923) (References: AstroNote 2020-256, TNS, Gaia observations)

2020adhh (= SNhunt435), TNS discovered 2020/12/17.312 by Catalina Real-Time Transient Survey and Mirco Villi
Found in UGC 3142 at R.A. = 04h43m46s.152, Decl. = +28°58'10".56
Located 8".4 west and 8".3 south of the center of UGC 3142 (Discovery image) (Odd Trondal image)
Mag 21.0:12/17, Type II (z=0.022) (zhost=0.021660) (References: AstroNote 2021-6)

2020adgf (= ASASSN-20qb), ATEL 14284 discovered 2020/12/18.820 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 05h14m12s.141, Decl. = -51°09'08".31
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 18.1:12/18, Type Ia-91T (z=0.06) (zhost=0.060092) (References: AstroNote 2020-264, TNS)

2020adaf (= ASASSN-20pz), ATEL 14284 discovered 2020/12/14.080 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 02h25m08s.116, Decl. = -61°33'19".94
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.9:12/14, Type Ia (z=0.048) (zhost=0.048597) (References: AstroNote 2020-262, TNS)

AT2020acpc (= ASASSN-20pu), ATEL 14284 discovered 2020/12/12.520 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h42m37s.427, Decl. = +24°18'07".59
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image) (Manfred Mrotzek image)
Mag 18.0:12/12, Type Ia (zhost=0.051371) (References: ATEL 14273, TNS)

2020acch (= ZTF20acvziuf) (= Gaia20fwe), TNS discovered 2020/12/10.204 by Zwicky Transient Facility (ZTF)
Found in UGC 1161 at R.A. = 01h38m14s.510, Decl. = +36°36'34".45
Located 7".5 east and 0".8 north of the center of UGC 1161 (Odd Trondal image) (Enrico Prosperi image)
Mag 18.4:2/11 (15.8:12/23), Type Ia (zhost=0.017072) (References: ZTF observations, Gaia observations)

2020abzv (= ASASSN-20pm), ATEL 14284 discovered 2020/12/09.000 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 813 at R.A. = 02h01m39s.660, Decl. = -68°26'12".20
Located 19".8 east and 8".9 north of the center of NGC 813 (Discovery image)
Mag 16.6:12/9, Type Ia (z=0.027) (zhost=0.026992) (References: AstroNote 2021-2, TNS)

2020abww (= ASASSN-20pi), ATEL 14284 discovered 2020/12/02.173 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in PGC 127532 at R.A. = 03h14m25s.073, Decl. = -62°27'02".71
Located 0".0 east and 0".0 north of the center of PGC 127532 (Discovery image)
Mag 17.1:12/2, Type Ia (z=0.059) (References: AstroNote 2020-250, TNS)

2020abql (= ASASSN-20pf) (= Gaia21aiz), ATEL 14284 discovered 2020/12/05.250 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 18-G6 at R.A. = 08h21m32s.236, Decl. = -80°34'00".90
Located 15".4 east and 30".9 north of the center of ESO 18-G6 (Discovery image) (Fabio Feijo image) (Diago Canosa image)
Mag 19.1:3/24 (15.5:12/5), Type Ia (z=0.015) (References: TNS, Gaia observations)

AT2020aboy (= ASASSN-20pe), ATEL 14250 discovered 2020/12/05.130 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 02h31m08s.717, Decl. = -57°41'51".26
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.7:12/5, Type unknown (zhost=0.037733) (References: TNS)

AT2020ablj (= ASASSN-20pa), ATEL 14250 discovered 2020/12/03.060 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 23h12m12s.514, Decl. = -57°59'36".08
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.0:12/3, Type unknown (zhost=0.042656) (References: TNS)

2020abjq (= ATLAS20bgkm) (= Gaia20fss), TNS discovered 2020/12/02.377 by ATLAS
Found in UGC 678 at R.A. = 01h06m14s.630, Decl. = +03°34'26".08
Located 9".0 east and 1".8 south of the center of UGC 678 (Enrico Prosperi image)
Mag 17.3:2/2 (16.3:12/14), Type II (z=0.018433) (References: AstroNote 2020-240, Gaia observations)