Much of this data comes from CBET Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. CBET now has an M31 novae page, M33 novae page, and an M81 novae page.   An archive of the updates to this page is available.

CBET has a naming convention now for novae in M31 (now extended to Novae in M33 and M81).   This convention is YYYY-MMa, where YYYY is the year and MM is the 2-digit month of discovery, and 'a' is a lower-case letter (a, b, c, etc.) representing the order of discovery within that month.   Novae in the megellanic clouds are named with the year followed by a number.   Also, see W. Pietsch's M31 (apparent) optical nova catalogue, M33 novae catalog, and M81 novae catalog Please note that I do not keep track of galactic novae.  

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Nova M31 2016-07e? (= PNV J00430400+4117079) (= M31N 1990-10a) (= M31N 2007-07a), CBAT TOCP discovered 2016/07/27.698 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h43m04s.000, Decl. = +41°17'07".90
Located 222".0 east and 59".0 north of the center of M31 (Myaki-Argenteus image) (Emmanuel Conseil image)
Mag 16.3:7/27, Type unknown (References: ATEL 9276

AT2016ejb, (= kait-16ai) (= MASTER OT J004003.13+414518.7) TNS discovered 2016/07/26.478 by Lick Observatory Supernova Search
Found in M31 at R.A. = 00h40m03s.150, Decl. = +41°45'19".08
Located 0".0 east and 0".0 north of the center of M31 (Discovery image) (MASTER image)
Mag 17.4:7/26, Type unknown (References: ATEL 9271)

Nova M31 2016-07c? (= PNV J00435768+4134528), CBAT TOCP discovered 2016/07/21.697 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h43m57s.680, Decl. = +41°34'52".80
Located 830".0 east and 1126".1 north of the center of M31 (Discovery image) (Yasuo Sano image) (Joel Nicolas image) (Evgeni P. Ovcharov image)
Mag 17.9:7/21, Type unknown (References: ATEL 9264)

Nova M31 2016-07b? (= ASASSN-16hf) (= AT2016dah) (= iPTF16bqy) ATEL 9245 discovered 2016/07/14.540 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in M31 at R.A. = 00h44m41s.073, Decl. = +40°08'35".68
Located 1338".0 east and 4053".0 north of the center of M31 (Discovery image) (Joel Nicolas image) (Joel Nicolas image) (Marc Serrau image)
Mag 17.1:7/16 (16.4:7/14), Type FeII (zhost=-0.001001) (References: ATEL 9248, TNS)

Nova M31 2016-07a? (= PNV J00424043+4108423), CBAT TOCP discovered 2016/06/23.987 by Kamil Hornoch and H. Kucakova
Found in M31 at R.A. = 00h42m40s.430, Decl. = +41°08'42".30
Located 43".9 west and 446".2 south of the center of M31 (Discovery image)
Mag 18.9:7/4, Type unknown

Nova M31 2016-06b, ATEL 9187 discovered 2016/06/07.210 by Swift/UVOT
Found in M31 at R.A. = 00h42m44s.650, Decl. = +41°15'50".40
Located 0".0 east and 0".0 north of the center of M31
Mag 18.1:6/7, Type unknown

Nova M81 2016-06a? (= PNV J09545398+6902340), ATEL 9175 discovered 2016/06/20.880 by Kamil Hornoch and H. Kucakova; M. Henze et al.
Found in M81 at R.A. = 09h54m53s.980, Decl. = +69°02'34".00
Located 210".2 west and 81".1 south of the center of M81 (K. Hornoch discovery image) (Gloria Sala image)
Mag 19.6:6/20, Type unknown (References: ATEL 9177 CBAT TOCP)

Nova M31 2016-06a? (= MASTER OT J004117.95+403352.9), ATEL 9164 discovered 2016/06/14.192 by MASTER robotic Net
Found in M31 at R.A. = 00h41m17s.950, Decl. = +40°33'52".90
Located 979".0 west and 2535".6 south of the center of M31 (Discovery image)
Mag 18.7:6/14, Type unknown

Nova M31 2016-05b? (= PNV J00424288+4115274), ATEL 9098 discovered 2016/05/29.050 by Kamil Hornoch and H. Kucakova
Found in M31 at R.A. = 00h42m42s.880, Decl. = +41°15'27".40
Located 16".3 west and 41".1 south of the center of M31 (Discovery image)
Mag 17.0:5/29, Type FeII (References: ATEL 9143 ATEL 9187 CBAT TOCP)

Nova M31 2016-05a? (= PNV J00423947+4121385), ATEL 9051 discovered 2016/05/10.081 by Kamil Hornoch and Jan Vrastil
Found in M31 at R.A. = 00h42m39s.470, Decl. = +41°21'38".50
Located 54".7 west and 330".0 north of the center of M31 (Discovery image)
Mag 17.3:5/11, Type FeII (References: ATEL 9076, CBAT TOCP)

Nova M81 2016-04b? (= PNV J09553395+6905248), ATEL 9012 discovered 2016/04/29.873 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m33s.950, Decl. = +69°05'24".80
Located 4".2 east and 89".7 north of the center of M81 (Discovery image)
Mag 20.8:4/29, Type unknown (References: CBAT TOCP)

archive.gif For Novae which have faded below 18th magnitude,
you will have to look in the archives
Current supernovae
Other supernovae from 2016 other extragalactic Novae from 2016
Other supernovae from 2015 Extragalactic Novae from 2015
Supernovae from 2014 Extragalactic Novae from 2014

For more information in Extra galactic novae, look at the Extra Galactic Nova links on the links page.   Look at the updates page for a list of the most recent changes and additions to these pages.

Please send feedback to David Bishop dbishopx@gmail.com