Extragalactic Novae - 2025

Much of this data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 2025 updates to this page is available.

Announced Extragalactic Novae will have a link on the main page that points to this one.   Please note that I do not keep track of galactic novae.  

For current Novae, please see the main Extragalactic Novae page

AT2025mmr (= PAT17X2503) (= PNV J01340166+3049052), TNS discovered 2025/05/29.873 by Xingming Observatory Sky Survey (XOSS)
Found in M33 at R.A. = 01h34m01s.660, Decl. = +30°49'05".20
Located 138".9 east and 568".4 north of the center of M33 (Discovery image)
Mag 17.8:5/29, Type unknown (zhost=-0.000600) (References: CBAT TOCP)

AT2025mlk (= OMB-PNV28), TNS discovered 2025/05/27.952 by Flavio Castellani
Found in M81 at R.A. = 09h55m23s.440, Decl. = +69°07'55".20
Located 52".1 west and 240".2 north of the center of M81
Mag 19.6:5/27, Type unknown

AT2025mho (= OMB-PNV27), TNS discovered 2025/05/28.088 by Flavio Castellani
Found in M31 at R.A. = 00h43m55s.890, Decl. = +41°34'50".50
Located 804".9 east and 1122".0 north of the center of M31
Mag 18.4:5/28, Type unknown

Nova M81 2025-05b? (= PNV J09552357+6907546), CBAT TOCP discovered 2025/05/27.921 by Italian Supernovae Search Project
Found in M81 at R.A. = 09h55m23s.570, Decl. = +69°07'54".60
Located 50".0 west and 240".0 north of the center of M81
Mag 19.6:5/27, Type unknown

AT2025kyv (= PAT17X2502) (= PNV J09552689+6903239), TNS discovered 2025/05/21.682 by Xingming Observatory Sky Survey (XOSS)
Found in M81 at R.A. = 09h55m26s.890, Decl. = +69°03'23".90
Located 33".7 west and 31".1 south of the center of M81
Mag 18.9:5/21, Type unknown (zhost=-0.000160) (References: CBAT TOCP)

AT2025kvc (= PNV J00422300+4116197), TNS discovered 2025/05/20.153 by Jingyuan Zhao
Found in M31 at R.A. = 00h42m23s.000, Decl. = +41°16'19".70
Located 240".4 west and 11".2 north of the center of M31 (Hornoch discovery image)
Mag 17.4:5/21, Type Nova (zhost=-0.001000) (References: CBAT TOCP, ATEL 17199)

AT2025kit (= ZTF25aapsjcy), TNS discovered 2025/05/08.488 by Zwicky Transient Facility (ZTF)
Found in M31 at R.A. = 00h43m00s.882, Decl. = +41°19'01".82
Located 186".6 east and 173".3 north of the center of M31
Mag 18.8:5/23 (17.7:5/8), Type unknown (zhost=-0.001000) (References: ZTF observations)

AT2025kiq (= PNV J00424614+4112388), TNS discovered 2025/05/11.161 by Jingyuan Zhao
Found in M31 at R.A. = 00h42m46s.140, Decl. = +41°12'38".80
Located 20".5 east and 209".7 south of the center of M31
Mag 18.8:5/11, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2025kip (= PNV J00422646+4104000), TNS discovered 2025/05/11.161 by Jingyuan Zhao
Found in M31 at R.A. = 00h42m26s.460, Decl. = +41°04'00".00
Located 201".7 west and 728".5 south of the center of M31
Mag 18.8:5/11, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2025keh (= PAT17X2501) (= PNV J00414774+4112048), TNS discovered 2025/05/07.883 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h41m47s.740, Decl. = +41°12'04".80
Located 638".4 west and 243".7 south of the center of M31
Mag 18.1:5/9, Type unknown (zhost=-0.001000) (References: ATEL 17178, CBAT TOCP)

Nova M31 2025-04d? (= PNV J00430092+4119021), CBAT TOCP discovered 2025/04/20.107 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h43m00s.920, Decl. = +41°19'02".10
Located 187".0 east and 173".6 north of the center of M31 (Discovery image)
Mag 18.0:4/21, Type unknown (References: ATEL 17158)

AT2025juc (= Nova M31 2025-04c?) (= PNV J00433279+4116281) (= ZTF25aaozqwm), CBAT TOCP discovered 2025/04/16.111 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h43m32s.797, Decl. = +41°16'27".95
Located 546".4 east and 19".6 north of the center of M31 (Discovery image)
Mag 18.9:5/16 (16.6:4/16), Type unknown (References: ATEL 17149, TNS, ZTF observations)

Nova M31 2025-04b? (= PNV J00424112+4115024), CBAT TOCP discovered 2025/04/16.120 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m41s.120, Decl. = +41°15'02".40
Located 36".1 west and 66".1 south of the center of M31 (Discovery image)
Mag 17.4:4/16, Type unknown (References: ATEL 17149)

AT2025jub (= Nova M31 2025-04a?) (= ZTF25aaozquu) (= PNV J00423788+4107427), CBAT TOCP discovered 2025/04/16.120 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m37s.872, Decl. = +41°07'42".58
Located 72".7 west and 505".8 south of the center of M31 (Discovery image)
Mag 18.4:5/16 (16.4:4/16), Type unknown (References: ATEL 17149, TNS, ZTF observations)

Nova M81 2025-04a? (= PNV J09553921+6902382), ATEL 17131 discovered 2025/04/04.134 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m39s.210, Decl. = +69°02'38".20
Located 32".4 east and 76".9 south of the center of M81 (Discovery image)
Mag 19.6:4/4, Type unknown (References: CBAT TOCP)

AT2025etj (= PSP25G) (= PNV J00411965+4138256), TNS discovered 2025/03/17.587 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h41m19s.650, Decl. = +41°38'25".60
Located 951".9 west and 1337".1 north of the center of M31 (Discovery image)
Mag 17.5:3/17, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2025dkp (= OMB-PNV24) (= PNV J09551261+6902462), TNS discovered 2025/03/05.878 by Flavio Castellani
Found in M81 at R.A. = 09h55m12s.610, Decl. = +69°02'46".20
Located 110".2 west and 68".9 south of the center of M81 (Hornoch discovery image) (Marc Serrau image)
Mag 19.2:3/6 (18.8:3/5), Type unknown (References: ATEL 17066, CBAT TOCP)

AT2025dih (= PNV J09554343+6905154), TNS discovered 2025/03/04.869 by Flavio Castellani
Found in M81 at R.A. = 09h55m43s.430, Decl. = +69°05'15".40
Located 55".0 east and 80".3 north of the center of M81 (Hornoch discovery image)
Mag 19.2:3/4, Type unknown (References: CBAT TOCP, ATEL 17064)

AT2025axv (= TCP J00441451+4122032) (= M31N 2001-11a), TNS discovered 2025/02/05.471 by Koichi Itagaki
Found in M31 at R.A. = 00h44m14s.510, Decl. = +41°22'03".20
Located 1015".0 east and 355".0 north of the center of M31 (Discovery image)
Mag 17.1:2/5, Type EGN (References: ATEL 17182, CBAT TOCP)

AT2025atx (= PNV J00430161+4119362) (= ATLAS25bhl), ATEL 17014 discovered 2025/02/03.102 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h43m01s.619, Decl. = +41°19'36".04
Located 194".8 east and 207".7 north of the center of M31 (Discovery image)
Mag 18.0:2/3, Type EGN (z=-0.001004) (References: TNS, CBAT TOCP)

Nova M81 2025-02a? (= PNV J09550507+6909090), ATEL 17011 discovered 2025/02/01.765 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m05s.070, Decl. = +69°09'09".00
Located 150".3 west and 313".9 north of the center of M81 (Discovery image)
Mag 19.8:2/1, Type unknown (References: CBAT TOCP)

Nova M81 2025-01c? (= PNV J09545432+6908301), CBAT TOCP discovered 2025/01/07.949 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h54m54s.320, Decl. = +69°08'30".10
Located 207".9 west and 275".0 north of the center of M81 (Discovery image)
Mag 21.3:1/7, Type unknown (References: ATEL 17002)

Nova M81 2025-01b? (= PNV J09551875+6900102), CBAT TOCP discovered 2025/01/26.749 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m18s.750, Decl. = +69°00'10".20
Located 77".4 west and 224".9 south of the center of M81
Mag 20.1:1/26, Type unknown (References: ATEL 16998)

AT2025akl (= Nova M81 2025-01a?) (= GOTO25wx) (= PNV J09552092+6904317), ATEL 16996 discovered 2025/01/26.749 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m20s.862, Decl. = +69°04'31".18
Located 65".7 west and 36".6 north of the center of M81 (Discovery image)
Mag 18.6:1/26, Type unknown (References: TNS, CBAT TOCP)

AT2025ki (= PSP25A) (= PNV J00424538+4116352), TNS discovered 2025/01/11.513 by Xingming Observatory Sky Survey (XOSS)
Found in M31 at R.A. = 00h42m45s.380, Decl. = +41°16'35".20
Located 11".9 east and 26".7 north of the center of M31 (Discovery image)
Mag 17.3:1/11, Type unknown (zhost=-0.001000) (References: CBAT TOCP)

AT2025bm (= ZTF25aaakxjj), TNS discovered 2025/01/04.165 by Zwicky Transient Facility (ZTF)
Found in M31 at R.A. = 00h42m49s.761, Decl. = +41°16'47".23
Located 61".3 east and 38".7 north of the center of M31 (Hornoch discovery image)
Mag 18.1:1/4, Type unknown (zhost=0.001341) (References: ATEL 16966, ZTF observations)

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