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.

2025/12/14
• 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.