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.

2026/05/27
• Created entries for 7 ATLAS supernovae 1 PS1 supernovae, 1 MASTER supernovae, 1 GEOTS supernovae, 4 ZTF supernovae, 3 ATLAS supernovae, 2 SGLF supernovae
• Updated the entries for 2026neh (Type Ia), 2026njg (Type II), 2026noc (Type Nova), 2026npf (Type Ia)

2026/05/26
• Created entries for 8 ATLAS supernovae, 3 ALeRCE supernovae, 1 Andrea Reguitti supernovae, 2 PS1 supernovae, 12 WFST supernovae, 1 BlackGEM supernovae, 12 ZTF supernovae, 3 SAGUARO_Bot1 supernovae, 2 GOTO supernovae, 3 SGLF supernovae
• Updated the entries for 2025ammz (Type IIn), 2026ehc (Type II), 2026gvn (Type Ia), 2026iea (Type Ia), 2026ipz (Type Ia), 2026iql (Type II), 2026ism (Type Ia), 2026iyd (Type Ib), 2026kor (Type IIn), 2026ktu (Type Ia), 2026kwu (Type Ia), 2026lpm (Type Ia), 2026lqp (Type Ia), 2026lqq (Type Ia), 2026lsl (Type Ia), 2026ltb (Type II), 2026ltq (Type Ia), 2026meq (Type IIb), 2026mex (Type Ic-BL), 2026mjn (Type Ibn), 2026mur (Type Ia), 2026muw (Type IIn), 2026nad (Type Ia), 2026nag (Type Ia), 2026naz (Type Ib), 2026ndx (Type Ia), 2026nfn (Type Ia), 2026nfu (Type Ia), 2026nik (Type Other), 2026njf (Type Ia), 2026nny (Type Ia), 2026noc (Type Nova)

2026/05/25
• Created entries for 53 ZTF supernovae, 4 MASTER supernovae, 21 ATLAS supernovae, 36 WFST supernovae, 11 SGLF supernovae, 8 GOTO supernovae, 2 XOSS supernovae, 7 PS1 supernovae, 14 ALeRCE supernovae, 2 ASAS-SN supernovae
• Updated the entries for 2018erx (Type Icn), 2026eyc (Type II), 2026kuw (Type II), 2026lht (Type Ia), 2026ljt (Type Ib-pec), 2026lli (Type Ia), 2026mil (Type Ia), 2026mst (Type Ia), 2026mxs (Type II), 2026nak (Type Ia), 2026ndw (Type Ic), 2026nik (Type Other)

2026/05/24
• Created entries for Nova M31 2022-10a? (= PNV J00425120+4116594 Mag 16.6 in M31) 24 ZTF supernovae, 23 ATLAS supernovae, 2 SGLF supernovae, 3 GOTO supernovae, 3 ALeRCE supernovae, 1 PS1 supernovae, 1 BlackGEM supernovae
• Updated the entries for 2026mhj (Type II), 2026mzl (Type Ia), 2026naq (Type IIb), 2026nbj (Type Ia)
• unpluging for the weekend, see you Monday.

2026/05/22
• Created entries for 9 ZTF supernovae, 3 PS1 supernovae, 2 GOTO supernovae
• Updated the entries for 2026kmp (Type II)

2026/05/21
• Created entries for AT2026nhw (Mag 18.8 in M31), 3 GOTO supernovae, 4 LAST supernovae, 7 ZTF supernovae, 7 WFST supernovae 23 ZTF supernovae, 17 GOTO supernovae, 3 PS1 supernovae, 4 ATLAS supernovae, 2 ALeRCE supernovae, 1 LAST supernovae, 16 WFST supernovae
• Updated the entries for 2026hlq (Type Ia), 2026kbr (Type II), 2026lkm (Type Ia), 2026lmm (Type Ia), 2026lrq (Type II), 2026mah (Type IIn), 2026mrd (Type Ia), 2026mvy (Type Ia), 2026knt (Type Ia), 2026lli (Type Ia), 2026mta (Type Ia), 2026mxg (Type Ia), 2026ngb (Type II)
• Added images of 2026ewd, 2026fov (Mag 14.0), 2026fvx (Mag 14.3), 2026gwx (Mag 16.6), 2026kid (Mag 15.0), 2026kie (Mag 15.5), 2026kza (Mag 15.0), 2026lck (Mag 15.4), 2026lga (Mag 16.9), 2026llu (Mag 17.0), 2026lmp (Mag 15.3), 2026lnt (Mag 17.9), 2026lsg (Mag 17.3), 2026nal (Mag 16.0)
• Interesting: 2026ngb (in NGC 4924, found very early), 2026nfo (Mag 16.4 on the outskirts of UGC 1186)

2026/05/20
• Created entries for 11 ZTF supernovae, 6 GOTO supernovae, 1 SGLF supernovae
• Updated the entries for 2026led (Type Ia), 2026maa (Type Ia), 2026mlc (Type II), 2026mld (Type Ia), 2026msv (Type Ia-91bg), 2026lez (Type Ia), 2026mby (Type Ia), 2026mif (Type II), 2026mkv (Type Ia)

2026/05/19
• Created entries for Nova M81 2026-05a? (= PNV J09550289+6902138 Mag 20.7 in M81) 2 PS1 supernovae, 32 ATLAS supernovae, 3 SGLF supernovae, 1 BlackGEM supernovae, 1 MASTER supernovae, 1 XOSS supernovae, 17 ZTF supernovae, 26 WFST supernovae, 3 GOTO supernovae, 1 Gabriel Jaimes-Illanes supernovae
• Updated the entries for 2026lck (Type Nova), 2026ljx (Type Ia), 2026lup (Type Ia), 2026mgf (Type Ia), 2026mrg (Type II), 2026myp (Type Ia), 2026nba (Type Ia)
• Interesting: 2026nbl (Mag 17.0 in M83)

2026/05/18
• Created entries for 1 ASAS-SN supernovae, 2 GOTO supernovae, 2 ATLAS supernovae 46 ATLAS supernovae, 6 PS1 supernovae, 4 SAGUARO_Bot1 supernovae, 3 SGLF supernovae, 1 MASTER supernovae, 2 BlackGEM supernovae, 7 GOTO supernovae, 5 LAST supernovae, 5 ZTF supernovae
• Updated the entries for 2025alls (Type AGN), 2026fhi (Type II), 2026gyx (Type Ia), 2026hku (Type Ia), 2026hmj (Type Ib), 2026irz (Type Ia), 2026iwp (Type SLSN-I), 2026jci (Type II), 2026jpt (Type Ia), 2026jte (Type Ia), 2026kal (Type II), 2026keo (Type Ia), 2026kys (Type Ia), 2026lal (Type Ia), 2026lcn (Type Ia), 2026ldz (Type Ia), 2026lni (Type Ia), 2026lnv (Type Ia), 2026loo (Type TDE-H-He), 2026lpz (Type Ia), 2026lvp (Type Ia), 2026lxa (Type Ia), 2026mho (Type II), 2026mim (Type Ia), 2026mjd (Type SN), 2026mjw (Type Ia), 2026mkj (Type Ia), 2026mlg (Type Ia), 2026mlm (Type IIn-pec), 2026mrc (Type Ia), 2026mrf (Type Ia), 2026mss (Type Ia), 2026mtw (Type II), 2026muv (Type II), 2026mxl (Type Ia-91bg)

2026/05/17
• Created entries for 24 WFST supernovae, 23 GOTO supernovae, 5 PS1 supernovae, 20 ATLAS supernovae, 6 SGLF supernovae, 6 ZTF supernovae
• Updated the entries for 2026llu (Type Ia)

2026/05/16
• Created entries for 24 ZTF supernovae, 2 GOTO supernovae, 2 ATLAS supernovae
• Updated the entries for 2026kux (Type Ia), 2026ltj (Type Ia), 2026jbt (Type AGN), 2026lru (Type Ia), 2026mbj (Type CV), 2026mhn (Type CV), 2026mlf (Type Ia-91T), 2026mqo (Type II), 2026mrk (Type CV)
• Added images of 2025ajmj, 2026acd, 2026ayt (Mag 15.3), 2026dix, 2026ejy (Mag 16.7), 2026fjc, 2026fov, 2026fvx (Mag 14.9), 2026gwx (Mag 16.4), 2026icv (Mag 15.8), 2026jla, 2026jlm (Mag 16.0), 2026jsg, 2026kid (lots and lots), 2026kie, 2026lkm, 2026kza (Mag 14.9), 2026lfm, 2026lga (Mag 16.7), 2026lky, 2026lmo (Mag 16.3), 2026lmp, 2026lov
• Did some archiving

2026/05/15
• Created entries for 9 ATLAS supernovae, 1 MASTER supernovae, 6 ZTF supernovae, 3 PS1 supernovae, 15 WFST supernovae 11 ZTF supernovae, 7 GOTO supernovae, 1 LVRA supernovae, 4 ATLAS supernovae, 4 LAST supernovae
• Updated the entries for 2026kyt (Type Ia), 2026idh (Type Ic), 2026las (Type Ia), 2026lgi (Type Ia), 2026lhu (Type Ia), 2026ljt (Type Ia-91bg), 2026lkc (Type Ia), 2026llc (Type Ia), 2026loc (Type Ia), 2026mfl (Type II), 2026mfm (Type Ia), 2026mko (Type Ia)

2026/05/14
• Created entries for 11 ATLAS supernovae, 2 PS1 supernovae, 1 MASTER supernovae, 34 ZTF supernovae, 5 ALeRCE supernovae, 1 BlackGEM supernovae, 102 WFST supernovae, 1 LAST supernovae
• Updated the entries for 2026lnh (Type Ia), 2026lok (Type Ia), 2026lov (Type Ia), 2026lsb (Type Ia), 2026mho (Type II)

2026/05/13
• Created entries for 6 LAST supernovae, 1 ASAS-SN supernovae, 3 SGLF supernovae, 28 ZTF supernovae, 8 GOTO supernovae, 5 PS1 supernovae, 1 XOSS supernovae
• Updated the entries for 2026fxs (Type Ib-pec), 2026llt (Type Ia), 2026lor (Type Ia), 2026lpk (Type Ia), 2026lqk (Type Ia), 2026lsg (Type II)

2026/05/12
• Created entries for 18 ATLAS supernovae, 26 ZTF supernovae, 5 SAGUARO_Bot1 supernovae, 4 PS1 supernovae, 3 LAST supernovae, 10 GOTO supernovae
• Updated the entries for 2026gzw (Type Ia), 2026hks (Type Ib), 2026irw (Type Ia), 2026isk (Type Ia), 2026ivw (Type II), 2026jvx (Type Ia), 2026kid (Type II), 2026kyv (Type II), 2026kzt (Type Ia), 2026kzu (Type Ia), 2026laf (Type Ia), 2026ljp (Type Ia), 2026lnb (Type Ia), 2026lnt (Type II), 2026mbc (Type Ia)

2026/05/11
• Created entries for 17 GOTO supernovae, 1 MASTER supernovae, 10 PS1 supernovae, 39 ZTF supernovae, 58 WFST supernovae, 4 ATLAS supernovae
• Updated the entries for 2026ikn (Type Ia), 2026jkr (Type Ic-BL), 2026kfw (Type Ia), 2026lns (Type Ia)

2026/05/10
• Created entries for 20 PS1 supernovae, 9 GOTO supernovae, 1 ATLAS supernovae, 17 ZTF supernovae, 70 WFST supernovae, 2 MASTER supernovae, 1 Claudio Balcon supernovae 8 PS1 supernovae, 50 ZTF supernovae, 9 ATLAS supernovae, 28 GOTO supernovae, 3 SAGUARO_Bot1 supernovae, 1 SGLF supernovae
• Updated the entries for 2026kwo (Type Ia), 2026lfb (Type Ia)

2026/05/09
• Created entries for 11 GOTO supernovae, 1 ATLAS supernovae, 5 ZTF supernovae, 2 LAST supernovae
• Updated the entries for 2026kmy (Type Ia), 2026krb (Type Ia)
• Added images of 2026ayt (Mag 14.1), 2026dix (Mag 15.6), 2026fov (Mag 14.2), 2026fvx (Mag 14.5), 2026gvk, 2026gwx (Mag 15.8), 2026gzx (Mag 17.2), 2026ihi (Mag 18.0), 2026jlm (Mag 15.5), 2026jsg, 2026kid, 2026kie (Mag 16.9), 2026kmo, 2026lig, 2026lmp (Mag 15.9)

2026/05/08
• Created entries for 2 LAST supernovae, 1 ASAS-SN supernovae, 10 ZTF supernovae, 5 GOTO supernovae, 1 MASTER supernovae 41 ZTF supernovae, 3 LAST supernovae, 3 GOTO supernovae, 6 ATLAS supernovae, 1 XOSS supernovae
• Updated the entries for 2026akp (Type II), 2026iha (Type IIn), 2026iic (Type Ia-CSM), 2026ixo (Type II), 2026jms (Type IIb), 2026jzl (Type Ib), 2026kyp (Type Ia), 2026lap (Type Ia), 2026jqe (Type Ia), 2026lmw (Type Ia), 2026log (Type Ia), 2026loz (Type Ia)

2026/05/07
• Created entries for 8 GOTO supernovae, 16 ATLAS supernovae, 34 ZTF supernovae, 2 XOSS supernovae
• Updated the entries for 2026enm (Type II), 2026jla (Type II), 2026jwy (Type Ia), 2026kco (Type IIn), 2026kff (Type Ia), 2026kie (Type Ic), 2026kjm (Type Ia), 2026kjp (Type Ia), 2026ksg (Type Ia), 2026lba (Type Ia), 2026ljv (Type Ia), 2026ljy (Type Ia)

2026/05/06
• Created entries for 7 ATLAS supernovae, 16 GOTO supernovae, 1 MASTER supernovae, 1 BlackGEM supernovae, 4 PS1 supernovae
• Updated the entries for 2026jcw (Type IIn), 2026koi (Type Ic-BL), 2026lcl (Type II), 2026lkn (Type SN), 2026lky (Type Ia)

2026/05/05
• Created entries for 4 SGLF supernovae, 17 ATLAS supernovae, 20 GOTO supernovae, 4 SAGUARO_Bot1 supernovae, 6 WFST supernovae, 1 GEOTS supernovae, 1 XOSS supernovae, 1 Ziyang Mai supernovae, 1 ZTF supernovae, 1 PS1 supernovae
• Updated the entries for 2026kfd (Type Ia), 2026kir (Type Ia), 2026kiw (Type Ia), 2026kiz (Type Ia), 2026kjm (Type Ia), 2026koe (Type Ia), 2026kuh (Type Ia), 2026kui (Type II), 2026kye (Type II), 2026kyf (Type Ia), 2026kyg (Type Ia), 2026kzy (Type Ia), 2026lav (Type Ia), 2026law (Type SLSN-I), 2026lba (Type Ia), 2026ldw (Type Ia), 2026lec (Type IIb), 2026lel (Type Ia), 2026lfm (Type Ic), 2026ljl (Type Ia)

2026/05/04
• Created entries for 11 ATLAS supernovae, 56 WFST supernovae, 7 ZTF supernovae, 4 GOTO supernovae, 1 MASTER supernovae, 1 PS1 supernovae
• Updated the entries for 2026fhx (Type SN), 2026jmu (Type Ia), 2026kba (Type IIb), 2026kbo (Type Ia), 2026kcg (Type Ia), 2026kep (Type Ia), 2026kgw (Type Ia), 2026khv (Type Ia), 2026kib (Type Ia), 2026kob (Type Ia), 2026kpn (Type Ic), 2026kut (Type IIn), 2026kza (Type Ia), 2026lau (Type Ia), 2026lda (Type Ia), 2026hdx (Type SLSN-II), 2026hnc (Type Ia), 2026kfb (Type Ia), 2026kis (Type Ia), 2026kit (Type Ia), 2026kne (Type Ia), 2026koy (Type Ia), 2026kyj (Type Ia), 2026kyo (Type II), 2026lfo (Type Ia-91T), 2026lga (Type Ia), 2026lhu (Type Ia)
• Added images of 2016blu (Mag 17.2), 2026eqj, 2026ewd (Mag 17.1), 2026fov, 2026fvx (Mag 14.0), 2026gud (Mag 15.0), 2026gwx (Mag 16.7), 2026gzx (Mag 16.1), 2026ihi (Mag 17.3), 2026ixd (Mag 17.2), 2026jlm (Mag 15.6), 2026joh (Mag 17.6), 2026jsg (Mag 16.3), 2026jth (Mag 17.9), 2026jxj, 2026kia (Mag 16.5), 2026kid (Mag 15.9), 2026kie, 2026kmo (Mag 18.0), 2026kmz (Mag 17.4), 2026knu (Mag 19.0), 2026kqq (unconfirmed)

2026/05/03
• Created entries for 3 ATLAS supernovae, 7 ZTF supernovae

2026/05/02
• Created entries for 17 ZTF supernovae, 9 WFST supernovae, 6 ATLAS supernovae, 1 SGLF supernovae
• Updated the entries for 2026gwc (Type IIP), 2026jeg (Type Ia), 2026kof (Type Ia), 2026krh (Type Ia), 2026lat (Type SLSN-II)

2026/05/01
• Created entries for 4 WFST supernovae, 5 ZTF supernovae, 6 ATLAS supernovae
• Updated the entries for 2026joh (Type II), 2026kie (Type Ib), 2026kqy (Type Ia)
• Added images of 2026evv (Mag 18.0), 2026fjc, 2026fsf, 2026fvx (Mag 13.2), 2026icv (Mag 16.1), 2026ihi, 2026iyr, 2026jla (Mag 18.2), 2026jlm, 2026jsg, 2026key (Mag 16.5), 2026kid, 2026lab
• Full moon.

Errata