Occasionally I make a mistake. Please see the Errata section for a list of these. If you find one, or a broken link, please e-mail me and I will fix it. I maintain these pages with an ASCII editor (no web publishing tools involved at ALL) and I occasionally make a typo which escapes my QC checks.

2025/12/25
• Created entries for 58 WFST supernovae, 13 GOTO supernovae, 1 XOSS supernovae, 2 ATLAS supernovae, 2 PS1 supernovae, 1 ZTF supernovae
• Updated the entries for 2025afvq (Type Other), 2025agqe (Type II), 2025ahol (Type Ia), 2025uvo (Type IIn)
• Added images of 2025abao (Mag 14.8), 2025acsn, 2025afzk (Mag 17.1), 2025agbz (Mag 18.2), 2025agmm, 2025agwf, 2025ahch

2025/12/24
• Created entries for 3 PS1 supernovae, 11 ATLAS supernovae, 50 GOTO supernovae, 13 LAST supernovae, 7 XOSS supernovae, 14 WFST supernovae, AT2025ahzx (Mag 18.5 in M31),
• Updated the entries for 2025ahla (Type Ia)

2025/12/23
• Created entries for 4 ATLAS supernovae, 3 GOTO supernovae, 14 LAST supernovae, 1 PS1 supernovae, 46 ZTF supernovae, 14 WFST supernovae, 1 Fritz supernovae, 1 Ziyang Mai supernovae
• Updated the entries for 2025aewb (Type IIP), 2025afeu (Type Ia), 2025afgr (Type Ia), 2025agax (Type Ia), 2025agbc (Type Ia), 2025agby (Type IIn), 2025aggc (Type Ia), 2025agyg (Type Ia), 2025ahdt (Type Ia), 2025ahdz (Type Ia), 2025ahhs (Type Ia), 2025ahim (Type Ia), 2025ahjg (Type IIb), 2025ahji (Type Ib), 2025ahkt (Type Ia-91T), 2025ahlf (Type Ia), 2025ahnj (Type Ibn), 2025ahsk (Type Ia), 2025ahxd (Type SN)

2025/12/21
• Created entries for 64 ZTF supernovae, AT2025ahwi (Mag 19.1 in M31), 9 WFST supernovae, 12 ATLAS supernovae, 15 GOTO supernovae, 4 XOSS supernovae, 7 LAST supernovae, 1 MASTER supernovae
• Updated the entries for 2025aghv (Type Ia), 2025agmm (Type Nova), 2025agwf (Type Nova), 2025ahch (Type Nova), 2025ahdi (Type Ia), 2025ahdq (Type II), 2025ahpa (Type Ia), 2025ahpc (Type Other), 2025ahqr (Type Ia-02cx in M108), 2025ahsa (Type Ia), 2025agvg (Type Ia), 2025agvw (Type Ia)
• Compared all of the Sn types with TNS to make sure they match.

2025/12/20
• Created entries for 28 ZTF supernovae, 7 ATLAS supernovae, 5 XOSS supernovae, 12 GOTO supernovae, 8 LAST supernovae
• Updated the entries for 2025aaeo (Type SLSN-I), 2025aaxh (Type II), 2025afad (Type SLSN-I), 2025agmz (Type Ia), 2025agqn (Type Ia), 2025agui (Type Ia), 2025ahbi (Type Ia), 2025ahem (Type Ia), 2025ahhb (Type Ia)
• Added images of 2025abao, 2025abov, 2025acsn, 2025advo, 2025aecv, 2025afcy, 2025afdy, 2025afih, 2025agmm (Mag 16.1), 2025agyg, 2025ahep, 2025rbs

2025/12/19
• Created entries for 25 ZTF supernovae, 19 GOTO supernovae, 1 BlackGEM supernovae, 1 Taiga Sasaoka supernovae, 1 WFST supernovae, 14 ATLAS supernovae, 1 PS1 supernovae, 5 LAST supernovae
• Updated the entries for 2025afvr (Type TDE), 2025agdh (Type Ia), 2025ahep (Type II), 2025ahie (Type Ia), 2025ahkg (Type II)

2025/12/18
• Created entries for 12 ATLAS supernovae, 37 GOTO supernovae, 39 ZTF supernovae, 1 PS1 supernovae, 14 LAST supernovae, 2 WFST supernovae, 3 Fritz supernovae, 1 MASTER supernovae
• Updated the entries for 2025aayl (Type IIn), 2025aerb (Type SLSN-II), 2025aerp (Type Ia), 2025aeze (Type II), 2025afwg (Type Ic), 2025afwy (Type Ia), 2025agdl (Type Ia), 2025agmy (Type Ia-91T), 2025agsf (Type Ia), 2025agsq (Type Ia), 2025agyo (Type Ia), 2025agyp (Type Ia), 2025ahio (Type Ia), 2025xmg (Type CV)

2025/12/17
• Created entries for 26 GOTO supernovae, 42 ZTF supernovae, 2 MASTER supernovae, 1 PS1 supernovae, 63 WFST supernovae, 1 ATLAS supernovae, 2 Ziyang Mai supernovae, 2 Fritz supernovae
• Updated the entries for 2021aicz (Type II), 2025aedh (Type Ia), 2025aeet (Type IIb), 2025afam (Type Ia), 2025afrk (Type Ia), 2025aftk (Type Ia), 2025aftz (Type II), 2025afvr (Type TDE), 2025afwu (Type II), 2025afzk (Type IIb), 2025aghl (Type IIn), 2025aghr (Type Ia), 2025aghy (Type Ia), 2025agkg (Type Ia), 2025agmn (Type Ia), 2025agmr (Type Ia), 2025agoq (Type Ia), 2025agpm (Type Ia), 2025agye (Type Ia), 2025wrz (Type IIn)

2025/12/16
• Created entries for AT2025ahch (Mag 17.6 in M31), 3 PS1 supernovae, 7 ATLAS supernovae, 35 ZTF supernovae, 2 MASTER supernovae, 2 GOTO supernovae, 1 ALeRCE supernovae, 2 XOSS supernovae
• Updated the entries for 2025afhd (Type Ia), 2025agie (Type Ia), 2025agkr (Type Ia), 2025uvo (Type IIn)

2025/12/15
• Created entries for 4 MASTER supernovae, 7 ATLAS supernovae, 3 PS1 supernovae, 33 ZTF supernovae, 5 GOTO supernovae, 1 XOSS supernovae, 36 WFST supernovae
• Updated the entries for 2025advx (Type Ia), 2025afti (Type Ia, was a Ic), 2025agep (Type II)

2025/12/14
• Created entries for 41 PS1 supernovae, 26 GOTO supernovae, 5 ZTF supernovae, AT2025agwf (Mag 17.5 in M31), 4 ATLAS supernovae, 1 MASTER supernovae, 1 XOSS supernovae 1 MASTER supernovae, 21 GOTO supernovae, 13 ATLAS supernovae, 6 WFST supernovae, 2 Ziyang Mai supernovae, 10 ZTF supernovae, 1 XOSS supernovae, 1 PS1 supernovae
• Updated the entries for 2025advv (Type II), 2025aeqz (Type Ia), 2025aeuj (Type Ia), 2025aevs (Type Ia), 2025affy (Type Ia), 2025afti (Type Ic), 2025aggl (Type IIn), 2025agjq (Type Ia), 2025agki (Type Ia), 2025agkk (Type Ia-91T), 2025agnp (Type Ia), 2025aeuq (Type SLSN-I), 2025afgr (Type Ia), 2025afnm (Type Ia)

2025/12/13
• Created entries for 12 ZTF supernovae, 18 ATLAS supernovae, 23 WFST supernovae, 1 MASTER supernovae 6 XOSS supernovae, 60 ZTF supernovae, 7 ATLAS supernovae, 3 GOTO supernovae
• Updated the entries for 2025aedc (Type II), 2025aetg (Type IIn), 2025afeo (Type Ib), 2025afgl (Type Ia), 2025afsv (Type II), 2025afto (Type Ic-BL), 2025afvw (Type Ia), 2025afzb (Type II), 2025agfz (Type IIn), 2025agll (Type Ia), 2025afad (Type SLSN-I), 2025afhd (Type Ia)
• Added images of 2025abao, 2025abov (Mag 16.3), 2025acbl, 2025acbz, 2025aceh (Mag 16.8), 2025acsn, 2025aedz, 2025aefi, 2025aesw (Mag 18.6), 2025aeum (Mag > 19.2), 2025aezd, 2025afdy, 2025afih (Mag 15.8), 2025afsx, 2025pht, 2025ztn, Nova M31 2008-12a (Mag > 19.5), 2025aasv (Mag 17.0), 2025adje (Mag 14.8), 2025advo (Mag 16.0), 2025aeuj (Mag 19.3), 2025aeul (Mag 18.4), 2025afcy (Mag 17.5)

2025/12/12
• Created entries for 80 ZTF supernovae, 1 MASTER supernovae, 6 XOSS supernovae, 10 ATLAS supernovae, 1 GOTO supernovae, AT2025agmm (Mag 19.4 in M31), 3 PS1 supernovae
• Updated the entries for 2025afwg (Type IIn), 2025aghx (Type Ia), 2025agix (Type Ia)

2025/12/11
• Created entries for 59 ZTF supernovae, 2 XOSS supernovae, 9 ATLAS supernovae, 24 GOTO supernovae, 3 PS1 supernovae
• Updated the entries for 2025aezb (Type Ia), 2025afeq (Type Ia), 2025afhr (Type Ia), 2025afva (Type II), 2025afxi (Type Ia), 2025afxm (Type Ia), 2025aggm (Type Ia)

2025/12/10
• Created entries for 11 ATLAS supernovae, 11 GOTO supernovae, 19 WFST supernovae
• Updated the entries for 2018mqc (Type Ia), 2025aedy (Type IIb), 2025afaa (Type Ia), 2025afcw (Type Ia), 2025afhv (Type Ia), 2025afrt (Type Ia), 2025afth (Type II)

2025/12/09
• Created entries for 1 XOSS supernovae, 5 MASTER supernovae, 21 GOTO supernovae, 2 PS1 supernovae, 12 WFST supernovae, 7 ATLAS supernovae, 1 BlackGEM supernovae, 3 LAST supernovae
• Updated the entries for 2025afih (Type Ia), 2025afve (Type Ia), 2025xov (Type II), 2025zth (Type IIb)

2025/12/08
• Created entries for 39 GOTO supernovae, 47 ZTF supernovae, 3 CRTS supernovae, 4 ATLAS supernovae, 1 BlackGEM supernovae, 6 WFST supernovae
• Updated the entries for 2020afiv (Type Ia), 2025acxu (Type Ia), 2025aerd (Type Ia), 2025aeuo (Type Ia), 2025aezh (Type Ia), 2025aezk (Type Ia), 2025afdk (Type II), 2025afdy (Type Ia), 2025afhk (Type Ia), 2025afso (Type Ia), 2025afst (Type II), 2025afts (Type II), 2025afty (Type Ia), 2025afuz (Type Ia), 2025afxk (Type Ia), 2025afyb (Type II)

2025/12/07
• Created entries for 1 XOSS supernovae, 20 GOTO supernovae, 5 ATLAS supernovae, 1 PS1 supernovae, 20 ZTF supernovae, 3 WFST supernovae, 3 Fritz supernovae
• Updated the entries for 2025abuj (Type Ia), 2025aern (Type Ic-BL), 2025afty (Type Ia), 2025aful (Type Ia), 2025afwb (Type Ia)

2025/12/06
• Created entries for 37 ZTF supernovae, 2 WFST supernovae, 3 GOTO supernovae, 1 ATLAS supernovae, 6 PS1 supernovae
• Updated the entries for 2025aezv (Type Ia), 2025afea (Type Ia), 2025afef (Type Ia), 2025afrg (Type Nova), 2025afvl (HPM),

2025/12/05
• Created entries for 6 GOTO supernovae, 1 ATLAS supernovae, 4 ZTF supernovae, 1 Ziyang Mai supernovae
• Updated the entries for 2025afth (Type II)

2025/12/04
• Created entries for 8 GOTO supernovae, 1 ATLAS supernovae, 8 WFST supernovae, 2 ZTF supernovae
• Updated the entries for 2025aeqy (Type Ia), 2025afct (Type II), 2025afrw (Type II)

2025/12/03
• Created entries for 1 PS1 supernovae, 12 GOTO supernovae, 5 ATLAS supernovae, 5 WFST supernovae, 1 XOSS supernovae, 1 ZTF supernovae, 1 MASTER supernovae
• Updated the entries for 2025abwv (Type Ia), 2025accl (Type II), 2025aerf (Type Ia), 2025aert (Type Ia), 2025aetg (Type II)

2025/12/02
• Created entries for 2 MASTER supernovae, 12 ZTF supernovae, 5 GOTO supernovae, 7 ATLAS supernovae, 1 Miguel Llamas Lanza supernovae, 12 WFST supernovae, 3 PS1 supernovae
• Updated the entries for 2025abwt (Type Ia), 2025acbh (Type Ic), 2025acbl (Type II), 2025accy (Type Ia), 2025adhn (Type II), 2025aept (Type II), 2025aepv (Type II), 2025aerh (Type Ia), 2025aeyr (Type IIn), 2025afbi (Type II), 2025afcr (Type SLSN-I), 2025yrq (Type II), 2025ztn (Type IIb)

2025/12/01
• Created entries for AT2025afrg (Mag 18.2 in M31), 2 GOTO supernovae, 2 ATLAS supernovae, 5 ZTF supernovae 28 ZTF supernovae, 196 WFST supernovae, 4 GOTO supernovae, 4 ATLAS supernovae
• Updated the entries for 2025accv (Type Ia), 2025adaa (Type Ia), 2025adli (Type Ia), 2025aeft (Type II), 2025aeni (Type Ia), 2025aeze (Type TDE), 2025afcy (Type Ia), 2025aarn (Type II), 2025aaxz (Type II), 2025abdd (Type Ic), 2025abmj (Type II), 2025abob (Type II), 2025acnj (Type IIb), 2025acrr (Type Ia), 2025acrz (Type Ia), 2025acsj (Type Ia), 2025aedq (Type Ia), 2025aeuj (Type SN), 2025cku (Type IIn), 2025uam (Type II), 2025ztn (Type Ib)

Errata
• 2025/01/23 - Had the host galaxy of 2025zi marked as NGC 3198 not NGC 1398.