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 Please note that I do not keep track of galactic novae.  

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Nova M31 2013-05a? (= PNV J00424351+4116196), CBAT TOCP discovered 2013/05/09.998 by Stanislav Korotkiy, Vladimir Gerke and Sergey Pilipenko
Found in M31 at R.A. = 00h42m43s.51, Decl. = +41°16'19".6
Located 10" west and 11" north of the center of M31 (Discovery image)
Mag 16.9:5/9, Type unknown

Nova M81 2013-04c? (= PNV J09545056+6900364), ATEL 5015 discovered 2013/04/16.968 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h54m50s.56, Decl. = +69°00'36".4
Located 228".7 west and 198".7 south of the center of M81 (Discovery image)
Mag 22.3:4/5, Type unknown (References: CBAT TOCP)

Nova M81 2013-04b? (= PNV J09554503+6902369), ATEL 4980 discovered 2013/04/12.832 by Kamil Hornoch and H. Kucakova
Found in M81 at R.A. = 09h55m45s.03, Decl. = +69°02'36".9
Located 63".6 east and 78".2 south of the center of M81 (Discovery image) (N. Morales, K. Hornoch J. Gorosabel, and P. Kubanek image)
Mag 20.2:4/12, Type unknown (References: ATEL 5015, CBAT TOCP)

Nova M81 2013-04a? (= PNV J09552925+6904045), ATEL 4968 discovered 2013/04/05.946 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m29s.25, Decl. = +69°04'04".5
Located 21".0 west and 9".4 north of the center of M81 (Discovery image)
Mag 21.1:4/5 (19.5:3/25), Type unknown (References: CBAT TOCP)

iPTF13akn, ATEL 4967 discovered 2013/04/10.294 by Palomar Transient Factory
Found in M94 at R.A. = 12h51m12s.30, Decl. = +41°09'56".6
Located 0" east and 0" north of the center of M94
Mag 20.6:4/10, Type FeII

Nova M31 2013-04a? (= PNV J00425838+4118556), ATEL 4962 discovered 2013/04/08.140 by Kamil Hornoch
Found in M31 at R.A. = 00h42m58s.38, Decl. = +41°18'55".6
Located 158".4 east and 167".1 north of the center of M31 (Discovery image)
Mag 16.3:4/8, Type unknown (References: CBAT TOCP)

Nova M31 2013-03c? (= PNV J00425469+4110257), ATEL 4913 discovered 2013/03/24.772 by Kamil Hornoch and P. Hornochova
Found in M31 at R.A. = 00h42m54s.69, Decl. = +41°10'25".7
Located 117".0 east and 342".8 south of the center of M31 (Discovery image) (Kamil Hornoch image)
Mag 19.4:4/8 (17.9:3/24), Type unknown (References: CBAT TOCP, ATEL 4962)

Nova M31 2013-03b? (= PNV J00425509+4115560), ATEL 4913 discovered 2013/03/24.772 by Kamil Hornoch and P. Hornochova
Found in M31 at R.A. = 00h42m55s.09, Decl. = +41°15'56".0
Located 121".4 east and 12".5 south of the center of M31 (Discovery image) (Joseph Brimacombe image)
Mag 17.5:4/8 (16.3:3/26), Type unknown (References: CBAT TOCP, ATEL 4962)

Nova M81 2013-03a? (= PNV J09553917+6902390), ATEL 4894 discovered 2013/03/16.787 by Kamil Hornoch and H. Kucakova
Found in M81 at R.A. = 09h55m39s.17, Decl. = +69°02'39".0
Located 32".2 east and 76".1 south of the center of M81 (Discovery image) (Joseph Brimacombe image) (K. Hornoch image)
Mag > 22.0:3/16 (20.2:3/16), Type unknown (References: CBAT TOCP)

Nova M31 2013-03a? (= PNV J00422631+4213316), CBAT TOCP discovered 2013/03/02.570 by Zhangwei Jin and Xing Gao
Found in M31 at R.A. = 00h42m26s.31, Decl. = +42°13'31".6
Located 203" west and 3443" north of the center of M31 (Discovery image) (Joseph Brimacombe image) (Joseph Brimacombe image)
Mag 17.9:3/2, Type unknown

Nova M81 2013-02d? (= PNV J09560368+6859586), ATEL 4844 discovered 2013/02/25.132 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h56m03s.68, Decl. = +68°59'58".6
Located 163".7 east and 236".5 south of the center of M81 (Discovery image) (Joseph Brimacombe image)
Mag 20.4:2/25, Type unknown (References: CBAT TOCP)

Nova M81 2013-02c? (= PNV J09553974+6905219), ATEL 4844 discovered 2013/02/25.132 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m39s.74, Decl. = +69°05'21".9
Located 35".2 east and 86".8 north of the center of M81 (Discovery image) (Joseph Brimacombe image)
Mag 19.6:2/25, Type unknown (References: CBAT TOCP)

Nova M81 2013-02b? (= PNV J09552647+6903073), ATEL 4844 discovered 2013/02/25.132 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m26s.47, Decl. = +69°03'07".3
Located 35".9 west and 47".8 south of the center of M81 (Discovery image) (Joseph Brimacombe image)
Mag 18.6:2/25, Type unknown (References: CBAT TOCP)

Nova M31 2013-02b? (= PNV J00424629+4113517), CBAT TOCP discovered 2013/02/22.070 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h42m46s.29, Decl. = +41°13'51".7
Located 22" east and 137" south of the center of M31 (Discvoery image) (Toshihide Noguchi image) (SWIFT image) (Joseph Brimacombe image)
Mag 18.4:2/23 (17.2:2/22), Type unknown (References: ATEL 4833, ATEL 4988)

Nova M31 2013-02a? (= PNV J00392567+4037451), CBAT TOCP discovered 2013/02/10.470 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h39m25s.67, Decl. = +40°37'45".1
Located 2240" west and 2303" south of the center of M31 (Discovery image) (Joseph Brimacombe image (wide field))
Mag 17.3:2/10, Type FeII (References: ATEL 4835, 4836)

Nova M81 2013-02a? (= PNV J09555123+6901482), ATEL 4794 discovered 2013/02/06.990 by Kamil Hornoch and Jan Vrastil
Found in M81 at R.A. = 09h55m51s.23, Decl. = +69°01'48".2
Located 96".9 east and 126".9 south of the center of M81 (Discovery image) (G. Masi and T. Bisque image) (Giancarlo Cortini image) (Federica Luppi and Luca Buzzi image) (Joseph Brimacombe image (wide field)) (Massimiliano Martignoni image)
Mag 18.0:2/8, Type FeII (HET spectrum) (References: ATEL 4813, ATEL 4844, CBAT TOCP)

Nova M31 2013-01b? (= PNV J00440207+4125442), ATEL 4765 discovered 2013/01/26.427 by Koichi Nishiyama and Fujio Kabashima; Kamil Hornoch
Found in M31 at R.A. = 00h44m02s.09, Decl. = +41°25'44".4
Located 875".7 east and 575".9 north of the center of M31 (Discovery image (mirror)) (Alessandro Odasso image) (Robert Koff image) (Stan Howerton image)
Mag 17.4:1/28 (15.6:1/26), Type He/N (References: CBAT TOCP ATEL 4768)

Nova M83 2013-01b? (= PNV J13370342-2953398), CBAT TOCP discovered 2013/01/10.374 by Kamil Hornoch
Found in M83 at R.A. = 13h37m03s.42, Decl. = -29°53'39".8
Located 32".5 east and 103".1 south of the center of M83 (Discovery image)
Mag 21.0:1/10, Type unknown (References: ATEL 4732)

Nova M83 2013-01a? (= PNV J13364430-2950339), CBAT TOCP discovered 2013/01/08.374 by Kamil Hornoch
Found in M83 at R.A. = 13h36m44s.30, Decl. = -29°50'33".9
Located 216".2 west and 82".8 north of the center of M83 (Discovery image)
Mag 19.9:1/8, Type FeII nova (References: ATEL 4723, 4734)

Nova M31 2013-01a? (= PNV J00424418+4114517), CBAT TOCP discovered 2013/01/05.137 by Seiichiro Kiyota
Found in M31 at R.A. = 00h42m44s.18, Decl. = +41°14'51".7
Located 2" west and 77" south of the center of M31 (Koichi Nishiyama and Fujio Kabashima image) (T. Noguchi image) (Seiichiro Kiyota image) (K. Itagaki image)
Mag 17.7:1/5, Type FeII (References: ATEL 4720, ATEL 4757, ATEL 4988)

Nova M33 2013-01a? (= TCP J01340439+3039043), CBAT TOCP discovered 2013/01/04.466 by Koichi Nishiyama and Fujio Kabashima
Found in M33 at R.A. = 01h34m04s.39, Decl. = +30°39'04".3
Located 174" east and 33" south of the center of M33 (Discovery image) (Robert Koff image) (T. Yusa image) (MASTER image) (Esteban Aguilar image)
Mag 18.1:1/5 (17.0:1/4), Type FeII (References: ATEL 4720)

Nova M31 2012-12b? (= PNV J00461912+4144364), ATEL 4680 discovered 2012/12/26.486 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h46m19s.12, Decl. = +41°44'36".4
Located 2422" east and 1708" north of the center of M31 (Discovery image) (T. Noguchi image) (T. Yusa image)
Mag 16.6:12/28, Type FeII (References: ATEL 4683 CBAT TOCP)

Nova M31 2012-12a? (= PNV J00424912+4117027), ATEL 4653 discovered 2012/12/13.685 by Kamil Hornoch and Adrian Galad
Found in M31 at R.A. = 00h42m49s.12, Decl. = +41°17'02".7
Located 54".1 east and 54".2 north of the center of M31 (Discovery image (mirror))
Mag 18.5:12/16, Type FeII nova (References: ATEL 4658, ATEL 4757, ATEL 4988, CBAT TOCP)

Nova M81 2012-12a? (= PNV J09555177+6902549), ATEL 4630 discovered 2012/12/09.179 by Kamil Hornoch
Found in M81 at R.A. = 09h55m51s.77, Decl. = +69°02'54".9
Located 99".7 east and 60".2 south of the center of M81 (Discovery image) (Joseph Brimacombe image)
Mag 20.3:12/9, Type unknown (References: CBAT TOCP)

Nova M31 2012-10b? (= TCP J00452884+4154095), CBAT TOCP discovered 2012/10/18.684 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h45m28s.84, Decl. = +41°54'09".5
Located 1855" east and 2281" north of the center of M31 (Discovery image) (Kamil Hornoch image)
Mag 18.9:10/18, Type He/N nova (References: ATEL 4503)

Nova M81 2012-09b? (= PNV J09553556+6904271), ATEL 4462 discovered 2012/09/28.233 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m35s.56, Decl. = +69°04'27".1
Located 13" east and 32" north of the center of M81 (Discovery image (mirror))
Mag 20.1:9/28, Type unknown (References: ATEL 4757, CBAT TOCP)

Nova M81 2012-09a? (= PNV J09551009+6903254), ATEL 4462 discovered 2012/09/28.233 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m10s.09, Decl. = +69°03'25".4
Located 124" west and 30" south of the center of M81 (Discovery image (mirror))
Mag 19.0:9/28, Type unknown (References: ATEL 4757, CBAT TOCP)

Nova M33 2012-10a? (= PNV J01325723+3024260), CBET 3250 discovered 2012/10/06.661 by ROTSE collaboration; Koichi Nishiyama and Fujio Kabashima
Found in M33 at R.A. = 01h32m57s.23, Decl. = +30°24'26".0
Located 693" west and 911" south of the center of M33 (Nishiyama discovery image) (ROTSE image) (Joel Nicolas image) (Marc Serrau image) (Marc Serrau image) (Marc Serrau image) (Marc Serrau image) (Joseph Brimacombe image)
Mag 17.4:10/12, (15.8:10/4) Type FeII nova (References: ATEL 4464, CBAT TOCP)

Nova M31 2012-09b? (= PNV J00425104+4114102), CBAT TOCP discovered 2012/09/17.781 by Kamil Hornoch
Found in M31 at R.A. = 00h42m51s.04, Decl. = +41°14'10".2
Located 75".7 east and 118".3 south of the center of M31 (Kamil Hornoch image) (Kamil Hornoch image) (Z. Jin, X. Gao image) (Massimiliano Martignoni image)
Mag 17.2:9/20 (15.6:9/17), Type FeIIb (References: ATEL 4384, ATEL 4391)

Nova M31 2012-09a? (= PNV J00424720+4116195), ATEL 4364 discovered 2012/09/08.770 by Kamil Hornoch and Jan Vrastil
Found in M31 at R.A. = 00h42m47s.20, Decl. = +41°16'19".5
Located 32".4 east and 11".0 north of the center of M31 (Discovery image (mirror) (Joseph Brimacombe image)
Mag 16.9:9/10 (16.3:9/8), Type FeIIb (References: CBAT TOCP, ATEL 4368)

archive.gif For Novae which have faded below 18th magnitude,
you will have to look in the archives
Current supernovae
Other supernovae from 2012 other extragalactic Novae from 2012
Supernovae from 2011 Extragalactic Novae from 2011

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 dbishop@vhdl.org