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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AT2019tp (= MASTER OT J004559.36+415629.7), ATEL 12399 discovered 2019/01/15.810 by MASTER robotic Net
Found in M31 at R.A. = 00h45m59s.360, Decl. = +41°56'29".70
Located 0".0 east and 0".0 north of the center of M31 (Discovery image)
Mag 17.1:1/15, Type unknown (References: TNS)

AT2019gc (= Nova M33 2019-01a?) (= ATLAS19acv) (= PNV J01335694+3032337), CBAT TOCP discovered 2019/01/05.532 by Koichi Itagaki
Found in M33 at R.A. = 01h33m56s.940, Decl. = +30°32'33".70
Located 78".1 east and 423".1 south of the center of M33 (Discovery image) (Yuji Tanaka image) (Andrea Mantero image) (G. Wells and D. Bamberger image) (Robert Spellman image) (Joel Nicolas image) (J. Carrillo image)
Mag 18.7:1/9 (17.0:1/6), Type FeII (References: ATEL 12361, TNS)

AT2018lcl (= ZTF19aaaaoaz), TNS discovered 2018/12/30.855 by Emmanuel Conseil
Found in M31 at R.A. = 00h42m26s.240, Decl. = +41°04'00".90
Located 204".2 west and 727".6 south of the center of M31 (Discovery image (mirror)) (Yuji Tanaka image) (Emmanuel Conseil image) (Cedric Raguenaud image) (Robert Spellman image) (Robert Spellman image) (Quim Daura image color)
Mag 17.7:1/3 (15.9:12/31), Type FeIIb (References: ATEL 12349, ZTF observations; Near Nova M31 2009-09a)

AT2018klr (= XM07MZ) (= PNV J00424380+4117208) (= ZTF18aczzije), TNS discovered 2018/12/23.559 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m43s.800, Decl. = +41°17'20".80
Located 5".9 west and 72".3 north of the center of M31 (Discovery image) (Robert Spellman image) (Robert Spellman image) (Yuji Tanaka image) (Robert Spellman image)
Mag 17.1:12/31 (15.5:12/27), Type FeII (References: ATEL 12349, CBAT TOCP, ZTF observations)

AT2018kjt (= XM06MZ) (= PNV J00432462+4120222) (= Gaia18dxl), TNS discovered 2018/12/21.586 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h43m24s.620, Decl. = +41°20'22".20
Located 454".4 east and 253".7 north of the center of M31 (Discovery image)
Mag 18.0:12/22, Type Nova (References: ATEL 12349, CBAT TOCP, Gaia observations)

AT2018kcd (= MASTER OT J003944.84+403535.5) (= Gaia18dxm), ATEL 12307 discovered 2018/12/17.660 by MASTER robotic Net
Found in M31 at R.A. = 00h39m44s.840, Decl. = +40°35'35".50
Located 2034".0 west and 2433".0 south of the center of M31 (Discovery image) (Cedric Raguenaud image)
Mag 17.3:12/21 (16.2:12/17), Type FeIIb (References: ATEL 12349, ATEL 12308, TNS, Gaia observations)

2018kaf (= XM05MZ) (= PNV J00424241+4119411) (= Gaia18dxn), TNS discovered 2018/12/17.552 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m42s.410, Decl. = +41°19'41".10
Located 21".5 west and 212".6 north of the center of M31 (Discovery image (mirror)) (Cedric Raguenaud image)
Mag 17.7:12/21, Type FeII (References: ATEL 12349, CBAT TOCP, Gaia observations)

AT2018jib (= XM04MZ) (= PNV J00424065+4111080), TNS discovered 2018/12/02.817 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m40s.650, Decl. = +41°11'08".00
Located 41".4 west and 300".5 south of the center of M31 (Discovery image) (K. Hornoch image) (George Carey image) (Andrea Mantero image) (Antoniya Valcheva image) (Marc Serrau image) (Joel Nicolas image unconfirmed)
Mag 20.6:12/13 (17.7:12/4), Type FeII (References: ATEL 12349, ATEL 12261, ATEL 12262, CBAT TOCP)

AT2018jas (= PS18ceg), TNS discovered 2018/11/26.784 by George Carey
Found in M31 at R.A. = 00h43m44s.560, Decl. = +41°27'52".40
Located 678".1 east and 703".9 north of the center of M31 (Discovery image) (Peter Birtwhistle image) (Denis Buczynski image) (George Cary image) (Kees Scherer image) (Marc Serrau image) (Marc Serrau image) (Marc Serrau image) (Marc Serrau image) (Robert Spellman image) (Antoniya Valcheva image) (Robert Spellman image) (Marc Serrau image) (PS1 image)
Mag 19.1:12/15 (16.8:11/30), Type FeII (George Carey light curve) (References: ATEL 12245, ATEL 12268)

Nova M81 2018-11a? (= PNV J09555246+6902009), ATEL 12187 discovered 2018/11/06.186 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m52s.460, Decl. = +69°02'00".90
Located 103".0 east and 114".0 south of the center of M81 (Discovery image)
Mag 19.2:11/7, Type unknown (References: CBAT TOCP)

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 19.1:11/08/2018 (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, 11116, 11117, 11118, 11121, 11124, 11125, 11126, 11130, 11133, 11134, 11144, 11149, 11214, 12177, 12179, 12181, 12182, 12189, 12190, 12195, 12200, 12203, 12204, 12205, 12207, 12241)
Nova M31 2008-12a images subpage

AT2018hwq (= GSNST 2018-ak), TNS discovered 2018/11/06.351 by Cedric Raguenaud and Malhar R. Kendurkar
Found in M31 at R.A. = 00h42m47s.540, Decl. = +41°17'19".40
Located 36".3 east and 70".9 north of the center of M31
Mag 17.1:11/6, Type unknown (zhost=-0.001000)

AT2018hvv (= GSNST 2018-aj), TNS discovered 2018/11/05.394 by Malhar R. Kendurkar
Found in M31 at R.A. = 00h43m24s.070, Decl. = +41°15'31".17
Located 448".1 east and 37".4 south of the center of M31
Mag 18.4:11/5, Type unknown (zhost=-0.001000)

AT2018hrg (= kait-18ay) (= ATLAS18ycn), TNS discovered 2018/10/31.371 by Lick Observatory Supernova Search
Found in NGC 404 at R.A. = 01h09m26s.330, Decl. = +35°42'39".60
Located 8".4 west and 25".7 south of the center of NGC 404 (Discovery image (mirror)) (Yuji Tanaka image) (Manfred Mrotzek image)
Mag 17.6:11/1, Type Nova (zhost=-0.000160) (References: ATEL 12159, ATEL 12155)

archive.gif For Novae which have faded below 18th magnitude, you will have to look in the archives
Current supernovae
Other supernovae from 2018 Other Extragalactic Novae from 2018 Unconfirmed objects from 2018
Other supernovae from 2017 Other Extragalactic Novae from 2017 Unconfirmed objects from 2017

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