Much of this data comes from TNS, ATEL circulars and CBAT's Transient Objects Confirmation 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 Magellanic 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. CBET has an M31 novae page, M33 novae page, and an M81 novae page (last updated in 2011). Please note that I do not keep track of galactic novae.
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hits.
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AT2025afrg
(= PNV J00424276+4117303),
TNS
discovered 2025/12/01.067 by
RĂ³bert Fidrich
Found in M31 at R.A. = 00h42m42s.760, Decl. = +41°17'30".30 Located 17".6 west and 81".8 north of the center of M31 (Discovery image) Mag 18.2:12/1, Type EGN (References: CBAT TOCP) |
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AT2025aesw
(= ZTF25acemscy) (= ATLAS25oui) (= Nova M31 2025-11c?) (= TCP J00404022+4122433),
TNS
discovered 2025/11/21.389 by
Koichi Itagaki
Found in M31 at R.A. = 00h40m40s.239, Decl. = +41°22'44".01 Located 1397".8 west and 395".5 north of the center of M31 (Discovery) (T. Noguchi image) (Manfred Mrotzek image) (Markus Kempf image) Mag 19.0:12/4 (16.8:11/22), Type EGN (References: ZTF observations) |
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AT2025aeum
(= PSP25U) (= PNV J00425774+4108126) (= M31N 2025-11d) (= Vend76) (= M31N 2025-09c?) (= PNV J00425773+4108105),
TNS
discovered 2025/09/10.983 by
unknown
Found in M31 at R.A. = 00h42m57s.740, Decl. = +41°08'12".60 Located 151".4 east and 475".9 south of the center of M31 (XOSS discovery image) (PSP image) (Hornach image) Mag 17.6:11/25, Type Recurrent Nova (Note: = M31N 1963-09c, = M31N 1968-09a, = M31N 2001-07b, = M31N 2010-10e, = M31N 2015-10c) (References: ATEL 17506, 17516, 17522, CBAT TOCP, CBAT TOCP) |
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AT2025adss
(= PSP25T) (= PNV J00450509+4106337),
TNS
discovered 2025/11/16.547 by
Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h45m05s.090, Decl. = +41°06'33".70 Located 1589".0 east and 574".8 south of the center of M31 Mag 18.9:11/16, Type unknown (References: CBAT TOCP) |
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AT2025acfl
(= PNV J00424541+4115192) (= GOTO25jod) (= ATLAS25nwp),
TNS
discovered 2025/11/03.191 by
RĂ³bert Fidrich
Found in M31 at R.A. = 00h42m45s.505, Decl. = +41°15'18".10 Located 13".3 east and 50".4 south of the center of M31 (Discovery image) Mag > 18.0:11/18 (16.4:11/5), Type EGN (References: CBAT TOCP) |
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AT2025abws
(= MASTER OT J004058.82+405410.4),
TNS
discovered 2025/10/27.587 by
MASTER
Found in M31 at R.A. = 00h40m58s.820, Decl. = +40°54'10".40 Located 1192".8 west and 1318".1 south of the center of M31 Mag 17.6:10/27, Type unknown |
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AT2025abrs
(= PSP25S) (= PNV J00414761+4116217),
TNS
discovered 2025/10/26.555 by
Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h41m47s.610, Decl. = +41°16'21".70 Located 639".4 west and 13".2 north of the center of M31 (Discovery image) (Hornoch discovery image) Mag 18.3:10/26, Type FeII (References: ATEL 17457, ATEL 17493, CBAT TOCP) |
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AT2025abep
(= PNV J00412676+4100525),
TNS
discovered 2025/10/20.394 by
RĂ³bert Fidrich
Found in M31 at R.A. = 00h41m26s.760, Decl. = +41°00'52".50 Located 876".2 west and 916".0 south of the center of M31 Mag 17.5:10/20, Type unknown (References: CBAT TOCP) |
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AT2025abao
(= Nova M31 2025-10a?) (= MASTER OT J003848.65+404607.5) (= TCP J00384865+4046079),
TNS
discovered 2025/10/17.480 by
Koichi Itagaki
Found in M31 at R.A. = 00h38m48s.620, Decl. = +40°46'08".30 Located 2677".0 west and 1801".0 south of the center of M31 (K. Itagaki discovery) Mag 14.9:11/18 (14.6:10/28), Type LRN (References: CBAT TOCP, ATEL 17468, ATEL 17527) 2025abao images sub-page |
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AT2025aapj
(= ULL-ASTRO-MASTER-7) (= PNV J00400571+40485640),
TNS
discovered 2025/10/16.302 by
MASTER
Found in M31 at R.A. = 00h40m06s.077, Decl. = +40°48'55".03 Located 1790".3 west and 1633".5 south of the center of M31 (HAA/VSS discovery image) (McDonald Observatory image) (Klaus Wenzel image) (Klaus Wenzel image) Mag 17.9:10/16, Type EGN (z=-0.001670) (References: ATEL 17447, CBAT TOCP) |
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Nova M33 2025-10a?
(= PNV J01350197+3043202) (= 2021wfc) (= ZTF21abturbi),
CBAT TOCP
discovered 2025/10/02.647 by
Zhijian Xu and Xing Gao
Found in M33 at R.A. = 01h35m01s.970, Decl. = +30°43'20".20 Located 916".9 east and 223".4 north of the center of M33 (Discovery image) (Compasison image) Mag 18.4:10/2, Type unknown (References: ATEL 17432, ATEL 17435, ZTF Observations, ATLAS observations, 2021wfc) |
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LMC V1341
(= LMCN 1968-12a),
AAVSO 236393
discovered 1968/12/16.000 by
unknown
Found in LMC at R.A. = 05h09m58s.390, Decl. = -71°39'52".70 Located 0".0 east and 0".0 north of the center of LMC Mag 10.0:8/4/2024, Type Nova (Note: Recurrent nova) (References: ATEL 13731, 16752, 16771, 16772) |
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AT2022qpg
(= PNV J00442079+4123111) (= M31N 2005-10a) (= ZTF22aazdzyj),
TNS
discovered 2022/08/04.954 by
Italian Supernovae Search Project
Found in M31 at R.A. = 00h44m20s.790, Decl. = +41°23'11".10 Located 31".5 east and 61".8 north of the center of M31 (UofT image) (Carlos Segarra image) (Rafa Ferrando image) (Claudio Balcon image) (Hornoch images) (Carlos Segarra image) Mag 20.0:8/28 (16.5:8/6/2022), Type EGN (Note: recurrent nova) (ASASSN light curve) (Claudio Balcon Spectrum) (References: ATEL 15545, ATEL 15558, CBAT TOCP, ZTF observations, AAVSO observations; Nova M31N 2005-10a) |
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AT2022zyr
(= XM88MZ) (= PNV J00424719+4116196) (= M31N 2022-11b) (= PNV J00424726+4116335),
TNS
discovered 2022/11/12.526 by
Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m47s.190, Decl. = +41°16'19".60 Located 32".3 east and 11".3 north of the center of M31 (Discovery image) (Hornoch Discovery image) (Joel Nicolas image unconfirmed) Mag > 21.2:12/5/2025 (16.1:11/12/2022), Type EGN (Note: Recurent Nova) (References: ATEL 15759, ATEL 15760, ATEL 15779, CBAT TOCP CBAT TOCP; Nova M31N 1984-11b, M31N 2012-09a) |
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AT2022fcy
(= PSP22P) (= PNV J00441072+4154224) (= M31N 2022-03d) (= ZTF19acajeed) (= PNV J00441071+4154221),
TNS
discovered 2022/03/05.592 by
Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h44m10s.720, Decl. = +41°54'22".40 Located 974".0 east and 2294".9 north of the center of M31 (Discovery image) (Hornoch image) (XOSS image) Mag 18.4:8/7/2024 (17.7:3/5/2022), Type unknown (Note: Recurrent Nova) (References: ATEL 16759, ATEL 15729, CBAT TOCP, CBAT TOCP; = M31N 2017-01e) |
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Nova M31 2008-12a
(= PTF09hsd) (= AT2023yvj)
(= Nova M31 2011-10e?) (= PSP23R)
(= TCP J00452884+4154095)
(= Nova M31 2012-10a?),
(= PNV J00452885+4154094),
(= Nova M31 2011-10e?)
(= PNV J00452888+4154097) (= PNV J00452883+4154096) (= PNV J00452894+4154098)
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 18.7:11/30/2025 (15.91:10/2/2014), Type FeII (Note: Recurrent Nova) (References: See subpage) Nova M31 2008-12a images subpage |
| For Novae which have faded below 18th magnitude, you will have to look in the archives |
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
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