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 M81 2017-02a? (= AT2017axz), TNS discovered 2017/02/19.920 by Flavio Castellani, Raffaele Belligoli, Claudio Marangoni and Fernando Marziali (ISSP)
Found in M81 at R.A. = 09h55m36s.180, Decl. = +69°06'21".00
Located 0".0 east and 0".0 north of the center of M81 (Discovery image)
Mag 19.3:2/19, Type unknown

Nova M31 2017-02a? (= AT2017axi), TNS discovered 2017/02/18.746 by Raffaele Belligoli (ISSP)
Found in M31 at R.A. = 00h42m38s.120, Decl. = +41°14'10".70
Located 3".0 east and 115".0 south of the center of M31 (Discovery image) (ISSP image)
Mag 18.3:2/18, Type unknown (References: CBAT TOCP)

Nova M31 2017-01e? (= TCP J00441072+4154221), CBAT TOCP discovered 2017/01/31.395 by Koichi Itagaki
Found in M31 at R.A. = 00h44m10s.720, Decl. = +41°54'22".10
Located 965".0 east and 2294".0 north of the center of M31 (K. Itagaki image)
Mag 17.8:1/31, Type He/N (References: ATEL 10042)

Nova M81 2017-01a ATEL 9979 discovered 2017/01/13.879 by G. Sala et al.
Found in M81 at R.A. = 09h55m39s.800, Decl. = +69°06'28".10
Located 35".4 east and 153".0 north of the center of M81
Mag 21.3:1/20 (19.4:1/13), Type unknown

Nova M31 2017-01d? (= PNV J00424147+4116595), ATEL 9976 discovered 2017/01/19.705 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m41s.470, Decl. = +41°16'59".50
Located 32".2 west and 51".0 north of the center of M31 (Discovery image)
Mag 16.88:1/22, Type unknown (References: CBAT TOCP, ATEL 10003)

Nova M31 2017-01c? (= PNV J00422133+4112018), ATEL 9974 discovered 2017/01/18.701 by Kamil Hornoch, H. Kucakova, J. Vrastil
Found in M31 at R.A. = 00h42m21s.330, Decl. = +41°12'01".80
Located 259".4 west and 246".7 south of the center of M31 (Discovery image) (George Carey image prediscovery) (George Carey image) (K. Itagaki image) (Robert Spellman image) (Robert Spellman image) (Robert Spellman image) (Robert Spellman image) (Robert Spellman image)
Mag 14.6:1/31, Type FeII (References: ATEL 10028, CBAT TOCP, ATEL 10003)

MASTER OT J004025.31+405952.0, ATEL 9966 discovered 2017/01/14.778 by MASTER robotic Net
Found in M31 at R.A. = 00h40m25s.310, Decl. = +40°59'52".00
Located 0".0 east and 0".0 north of the center of M31 (Discovery image)
Mag 17.5:1/14, Type unknown

Nova M31 2017-01a? (= PNV J00424525+4116108) ATEL 9958 discovered 2017/01/13.879 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m45s.250, Decl. = +41°16'10".80
Located 10".4 east and 2".3 north of the center of M31 (Discovery image)
Mag 17.8:1/22 (16.6:1/8), Type unknown (References: ATEL 10002, ATEL 10003)

Nova M81 2016-12d ATEL 9975 discovered 2016/12/07.134 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m32s.370, Decl. = +69°03'43".00
Located 4".3 west and 12".1 south of the center of M81
Mag 19.6:12/7, Type unknown

Nova M81 2016-12c ATEL 9975 discovered 2016/12/07.134 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m39s.720, Decl. = +69°04'34".00
Located 35".1 east and 38".9 north of the center of M81
Mag 19.6:12/7, Type unknown

Nova M81 2016-11f ATEL 9975 discovered 2016/11/21.080 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m28s.190, Decl. = +69°04'09".40
Located 26".7 west and 14".3 north of the center of M81
Mag 20.2:11/21, Type unknown

Nova M81 2016-11e ATEL 9975 discovered 2016/11/21.080 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m15s.300, Decl. = +69°05'11".40
Located 95".7 west and 76".3 north of the center of M81
Mag 20.2:11/21, Type unknown

Nova M81 2016-12b? (= PNV J09550672+6903217), ATEL 9909 discovered 2016/12/17.134 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m06s.720, Decl. = +69°03'21".70
Located 141".8 west and 33".4 south of the center of M81 (Discovery image)
Mag 21.5:12/17 (20.9:12/12), Type unknown (References: CBAT TOCP)

Nova M31 2007-11f (= Nova M31 2016-12e?) (= AT2016jbx) (= MASTER OT J004131.52+410714.2), ATEL 1312 discovered 2007/11/28.716 by E. Ovcharov et el.
Found in M31 at R.A. = 00h41m31s.540, Decl. = +41°07'13".60
Located 820".8 west and 535".4 south of the center of M31 (Gianpiero Locatelli image) (Andre Mantero image) (MASTER image)
Mag 16.9:12/27/2016, Type He/Nn (recurrent nova) (References: TNS CBAT M31 page, ATEL 9942, 9912, 10001, 10040)

Nova M31 2016-12d? (= AT2016jbg), TNS discovered 2016/12/25.510 by Wei Gao and Xing Gao
Found in M31 at R.A. = 00h43m01s.490, Decl. = +41°16'59".40
Located 193".6 east and 50".9 north of the center of M31 (Discovery image) (George Carey image) (Gianpiero Locatelli image)
Mag 17.95:1/22 (17.2:12/25), Type FeIIb (References: ATEL 9941, ATEL 9915, ATEL 10003)

Nova M31 2016-12c? (= AT2016ize) (= PNV J00424659+4116578), TNS discovered 2016/12/21.714 by R. Belligoli et al.; Kamil Hornoch (ISSP)
Found in M31 at R.A. = 00h42m46s.590, Decl. = +41°16'57".80
Located 25".5 east and 49".3 north of the center of M31 (K. Hornoch image)
Mag 17.7:1/22, Type unknown (References: ATEL 9896, ATEL 9915, ATEL 10003)

Nova M33 2016-12b (= AT2016iwu) (= ASASSN-16ox), TNS discovered 2016/12/17.349 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in M33 at R.A. = 01h34m05s.760, Decl. = +30°22'39".72
Located 192".0 east and 1017".3 south of the center of M33 (G. Wells and D. Bamberger image) (Andre Mantero image)
Mag 17.4:12/20 (15.0:12/17), Type unknown (zhost=-0.000597)

Nova M31 2008-12a (= PTF09hsd) (= Nova M31 2011-10e?) (= TCP J00452884+4154095) (= Nova M31 2012-10a?), (= PNV J00452885+4154094), (= Nova M31 2011-10e?) (= PNV J00452888+4154097) ATEL 5607, discovered 2008/12/26.481 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h45m28s.80, Decl. = +41°54'10".1
Located 1845".9 east and 2280".9 north of the center of NGC 224 (= M31) (Discovery image)
Mag 21.5:12/20 (15.91:10/2/2014), Type FeII (recurrent nova) (References: ATEL 3725, 3727, 3728, 4503, 5607, 5611, 5627, 5633, 6527, 6532, 6535, 6537, 6540, 6543, 6546, 6558, 6565, 6604, 7964, 7965, 7967, 7968, 7969, 7974, 7976, 7979, 7980, 7984, 8029, 8033, 8038, 8062, 9415, 9848, 9852, 9853, 9857, 9861, 9864, 9865, 9872, 9874, 9881, 9883, 9885, 9891, (9906 corrected), 9907, 9910)
Nova M31 2008-12a images subpage

Nova M31 2016-12b? (= PNV J00431106+4113573), (= AT2016ixa) (= Gaia16cda), CBAT TOCP discovered 2016/12/11.447 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h43m11s.060, Decl. = +41°13'57".30
Located 301".0 east and 131".0 south of the center of M31 (Dicovery image)
Mag 18.65:1/22 (17.6:12/11), Type unknown (References: TNS, Gaia observations, ATEL 10003)

Nova M31 2016-12a? (= PNV J00422939+4113564), CBAT TOCP discovered 2016/12/11.447 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h42m29s.390, Decl. = +41°13'56".40
Located 168".0 west and 132".0 south of the center of M31 (Discovery image)
Mag 20.03:1/22 (17.6:12/11), Type unknown (References: ATEL 10003)

Nova M81 2016-12a? (= PNV J09540368+6907067), ATEL 9831 discovered 2016/12/03.016 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h54m03s.680, Decl. = +69°07'06".70
Located 479".1 west and 191".6 north of the center of M81 (Discovery image)
Mag 21.1:12/3 (20.3:11/28), Type unknown

Nova M33 2016-12a (= AT2016irp) (= PNV J01340157+3042398) (= PNV J01340158+3042406), TNS discovered 2016/12/03.557 by Peiyuan Sun and Xing Gao; K. Nishiyama and F. Kabashima
Found in M33 at R.A. = 01h34m01s.570, Decl. = +30°42'39".90
Located 137".7 east and 182".8 north of the center of M33 (Discovery image) (George Carey image) (Yasuo Sano image) (Andrea Mantero image) (Koichi Nishiyama and Fujio Kabashima image) (LOSS image) (Joel Nicolas image)
Mag 18.6:12/5 (17.5:12/3), Type He/N (References: TOCP, TOCP)

Nova M81 2016-11d? (= PNV J09562755+6859291), CBAT TOCP discovered 2016/11/27.977 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h56m27s.550, Decl. = +68°59'29".10
Located 291".9 east and 266".0 south of the center of M81 (Discovery image)
Mag 20.5:11/27, Type unknown (References: ATEL 9806)

Nova M31 2016-11b? (= PNV J00424281+4112334) (= PNV J00424279+4112336) (= Nova M31 2016-12a?), ATEL 9799 discovered 2016/11/27.759 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m42s.810, Decl. = +41°12'33".40
Located 17".1 west and 215".1 south of the center of M31 (Discovery image) (George Cary image) (LOSS image)
Mag 19.81:1/22 (17.7:11/27), Type unknown (References: CBAT TOCP, CBAT TOCP, ATEL 10003)

Nova M81 2016-11c, ATEL 9792 discovered 2016/11/21.080 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m42s.034, Decl. = +69°03'53".16
Located 47".5 east and 1".9 south of the center of M81
Mag 19.8:11/21, Type unknown

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