Extragalactic Novae

Extragalactic Novae - 2017

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 2017 updates to this page is available.

SNWeb is now collecting observations on extragalactic novae. Due to the large number of Extragalactic Novae announced in 2003 I have decided to give these novae their own page. That way you don't need to hunt through the main page or the 2017 supernova archive to find them. 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

AT2017ixs, (= Nova M31 2017-12d) (= MASTER OT J004355.89+413209.9), TNS discovered 2017/12/15.740 by George Carey
Found in M31 at R.A. = 00h43m56s.000, Decl. = +41°32'11".30
Located 808".0 east and 962".8 north of the center of M31 (Discovery image) (MASTER image) (Geroge Carey image)
Mag 19.0:6/20, Type unknown (References: ATEL 11755)

8 novae ATEL 11575 discovered by SPitzer InfraRed Intensive Transients Survey (SPIRITS)

SPIRITS17qm discovered 2017/11/05 at R.A. = 03h33m38s.85, Decl. = -36°08'09".4 Mag IR15.4, Type unknown (offset 33.5) (host=NGC 1365) (References: ATEL 11579)
SPIRITS17po discovered 2017/10/25 at R.A. = 13h37m01s.81, Decl. = -29°50'26".3 Mag IR16.8, Type unknown (host=M83)
SPIRITS17pc discovered 2017/10/12 at R.A. = 12h25m44s.43, Decl. = +12°39'44".5 Mag IR15.0, Type unknown (host=NGC 4388) (References: ATEL 11577)

Nova M81 2017-12e, ATEL 11111 discovered 2017/12/27.091 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m18s.200, Decl. = +69°04'31".10
Located 80".2 west and 36".0 north of the center of M81
Mag 20.6:12/27, Type unknown

Nova M81 2017-12d, ATEL 11111 discovered 2017/12/27.091 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m35s.890, Decl. = +69°03'37".60
Located 14".6 east and 17".5 south of the center of M81
Mag 19.1:12/27, Type unknown

Nova M81 2017-12c, ATEL 11111 discovered 2017/12/19.153 by S.C. Williams et al.
Found in M81 at R.A. = 09h54m54s.870, Decl. = +69°06'33".60
Located 205".1 west and 158".5 north of the center of M81
Mag 20.3:12/19, Type unknown

AT2017jfz (= Nova M31 2017-06j?) (= kait-17do) (= PNV J00425962+4121290), ATEL 10547 discovered 2017/06/29.984 by Kamil Hornoch and Petr Fatka
Found in M31 at R.A. = 00h42m59s.620, Decl. = +41°21'29".00
Located 172".3 east and 320".5 north of the center of M31 (Discovery image) (George Carey image) (George Carey image prediscovery) (LOSS image)
Mag 17.6:12/29, Type unknown (References: CBAT TOCP)

Nova M81 2017-12b? (= PNV J09553619+6901599), ATEL 11098 discovered 2017/12/26.016 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m36s.190, Decl. = +69°01'59".90
Located 16".2 east and 115".2 south of the center of M81 (Discovery image)
Mag 20.5:12/27, Type unknown (References: CBAT TOCP)

AT2018A (= TCP J00333837+4836022), CBAT TOCP discovered 2017/12/22.406 by Koichi Itagaki
Found in NGC 147 at R.A. = 00h33m38s.370, Decl. = +48°36'02".20
Located 260".6 east and 330".7 north of the center of NGC 147 (Discovery image) (ISSP image) (ISSP image) (Joel Nicolas image) (K. Itagaki image)
Mag 18.0:1/2 (15.9:12/23), Type FeII (zhost=-0.000644) (References: ATEL 11087, ATEL 11101, TNS)

Nova M31 2017-12c? (= PNV J00412371+4114594) (= M31N 1966-08a?), CBAT TOCP discovered 2017/12/20.851 by Emmanuel Conseil
Found in M31 at R.A. = 00h41m23s.710, Decl. = +41°14'59".40
Located 906".0 west and 74".0 south of the center of M31 (Discovery image) (Confirmation image) (Joel Nicolas image)
Mag 17.7:12/22 (15.5:12/20), Type Flare (dMe foreground flare star) (References: ATEL 11094, ATEL 12513)

AT2017ixr (= Nova M31 2017-12b), TNS discovered 2017/12/15.740 by George Carey
Found in M31 at R.A. = 00h44m01s.520, Decl. = +41°30'18".40
Located 870".3 east and 849".9 north of the center of M31 (Discovery image) (George Carey image (photometry image))
Mag 19.0:12/15, Type FeII (References: ATEL 11162)

Nova M81 2017-12a? (= PNV J09553813+6902204), ATEL 11029 discovered 2017/12/02.127 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m38s.130, Decl. = +69°02'20".40
Located 26".6 east and 94".7 south of the center of M81 (Discovery image)
Mag 18.9:12/2, Type unknown

AT2017ilm (= Nova M31 2017-11f?) (= PNV J00425789+4118447) (= ATLAS17njl), CBAT TOCP discovered 2017/11/19.402 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h42m57s.890, Decl. = +41°18'44".70
Located 153".0 east and 156".0 north of the center of M31 (Discovery image) (Peiyuan Sun and Tao Chen image) (Geroge Carey image) (Robert Spellman image) (Robert Spellman image) (Robert Spellman image) (Joel Nicolas image)
Mag 17.7:11/27 (16.6:11/20), Type unknown (References: TNS)

Nova M31 2017-11a? (= AT2017hvi) (= PTSS-17zap) (= TCP J00425419+4130425), TNS discovered 2017/11/04.695 by PMO-Tsinghua Supernova Survey (PTSS)
Found in M31 at R.A. = 00h42m54s.240, Decl. = +41°30'42".94
Located 111".6 east and 874".4 north of the center of M31 (George Carey image) (Nick James image) (XOSS image) (Nick James image) (Robert Spellman image) (Robert Spellman image) (Joel Nicolas image) (George Carey image) (Marc Serrau image) (Rafael Benavides image)
Mag 18.6:12/25 (17.7:11/8), Type FeII (References: ATEL 10990, ATEL 10998, ATEL 11095, ATEL 11108)

Nova M81 2017-11a, ATEL 11026 discovered 2017/11/18.120 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m40s.380, Decl. = +69°01'20".80
Located 38".7 east and 154".2 south of the center of M81
Mag 20.7:11/18, Type unknown

Nova M81 2017-10b, ATEL 11026 discovered 2017/11/01.130 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m25s.970, Decl. = +69°01'05".10
Located 38".6 west and 170".0 south of the center of M81
Mag 20.6:11/1, Type unknown

Nova M81 2017-10a, ATEL 11026 discovered 2017/10/30.140 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m31s.130, Decl. = +69°05'22".30
Located 10".9 west and 87".3 north of the center of M81
Mag 20.4:10/30, Type unknown

AT2017ifs (= Nova M31 2017-11e?) (= PNV J00430419+4115155), CBAT TOCP discovered 2017/11/16.510 by Koichi Nishiyama and Fujio Kabashima; George Carey; K. Hornoch and M. Wolf
Found in M31 at R.A. = 00h43m04s.190, Decl. = +41°15'15".50
Located 224".0 east and 53".0 south of the center of M31 (Discovery image) (K. Hornoch image) (George Carey image) (Andrea Mantero image) (G. Locatelli image (mirror)) (Rafael Benavides image) (Robert Spellman image) (Fernando Limon image) (Peiyuan Sun and Tao Chen image) (Paolo Campaner image) (Joel Nicolas image)
Mag 17.0:11/17 (15.4:11/16), Type He/N (References: ATEL 10986, ATEL 10978)

Nova M31 2017-11d? ATEL 10955 discovered 2017/11/12.203 by A. S. Igarashi, M. Henze, A. W. Shafter, J. Horst, T. A. Rector
Found in M31 at R.A. = 00h42m43s.32, Decl. = +41°17'15".5
Located 12".0 west and 66".0 north of the center of M31 (Discovery image) (Robert Spellman image prediscovery) (Nick James image) (Joel Nicolas image) (L. Hermosa Munoz image)
Mag 16.0:11/12, Type He/N (References: ATEL 10981, ATEL 10986, ATEL 11031)

Nova M31 2017-11c? (= TCP J00414435+4108287), CBAT TOCP discovered 2017/11/12.465 by Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h41m44s.350, Decl. = +41°08'28".70
Located 676".0 west and 460".0 south of the center of M31 (Discovery image) (Peiyuan Sun amd Tao Chen image)
Mag 17.7:11/17 (17.4:11/12), Type FeII (References: ATEL 10998)

AT2017hxw, TNS discovered 2017/11/09.962 by Emmanuel Conseil
Found in M31 at R.A. = 00h41m32s.220, Decl. = +41°07'17".30
Located 813".8 west and 531".2 south of the center of M31 (George Carey image prediscovery)
Mag 18.5:11/9, Type unknown (References: ATEL 10978)

AT2017hqq (= Nova M31 2017-10b?) (= PNV J00425023+4115271) (= PSP17F), ATEL 10910 discovered 2017/10/30.599 by Jiangao Ruan, Yanxi Li, Guoyou Sun and Xing Gao; Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m50s.230, Decl. = +41°15'27".10
Located 66".6 east and 41".4 south of the center of M31 (PSP discovery image) (Hornoch Discovery image) (Robert Spellman image) (Marc Serrau image)
Mag 19.5:11/6 (17.7:10/30), Type unknown (References: TNS CBAT TOCP)

AT2017hqh (= kait-17de), TNS discovered 2017/10/28.423 by Lick Observatory Supernova Search
Found in M33 at R.A. = 01h33m07s.850, Decl. = +30°33'09".07
Located 555".9 west and 386".4 south of the center of M33 (Discovery image) (Joel Nicolas image) (Nick James image)
Mag 19.0:10/28, Type unknown

5 novae ATEL 10903 discovered by SPitzer InfraRed Intensive Transients Survey (SPIRITS)

SPIRITS17pe discovered 2017/10/13 at R.A. = 12h56m47s.90, Decl. = +21°41'13".4 Mag IR17.3:10/13, Type unknown (host M64)
SPIRITS17nx discovered 2017/10/12 at R.A. = 13h18m51s.52, Decl. = -21°01'35".1 Mag IR17.1:10/12, Type unknown (host NGC 5068)
SPIRITS17mj (= Nova M81 2017-02a?)
SPIRITS17mi discovered 2017/06/25 at R.A. = 07h36m35s.94, Decl. = +65°37'26".5 Mag IR16.7:06/25, Type unknown (host NGC 2403)
SPIRITS17mb discovered 2017/06/08 at R.A. = 13h05m11s.16, Decl. = -49°30'19".0 Mag IR15.7:06/08, Type unknown (host NGC 4945)

Nova M31 2017-10a? (= PNV J00423905+4123006), ATEL 10849 discovered 2017/10/14.039 by Kamil Hornoch, H. Kucakova, and M. Wolf
Found in M31 at R.A. = 00h42m39s.050, Decl. = +41°23'00".60
Located 59".4 west and 412".1 north of the center of M31 (Discovery image) (Nick James image) (Robert Spellman image) (L. Hermosa-Munoz image)
Mag 18.8:10/14, Type FeII (References: ATEL 10887, ATEL 11057, CBAT TOCP)

Nova M31 2017-09e? (= PNV J00421219+4110192), CBAT TOCP discovered 2017/09/24.444 by Koichi Itagaki
Found in M31 at R.A. = 00h42m12s.190, Decl. = +41°10'19".20
Located 363".0 west and 349".0 south of the center of M31 (Discovery image) (Yasuo Sano image) (Yasuo Sano image) (Yasuo Sano image) (George Carey image) (Nick James image) (Marc Serrau image)
Mag 19.0:10/14 (16.3:9/26), Type FeII (References: ATEL 10814)

Nova M81 2017-09b? (= PNV J09561042+6906106), ATEL 10767 discovered 2017/09/18.129 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h56m10s.420, Decl. = +69°06'10".60
Located 199".5 east and 135".5 north of the center of M81
Mag 20.7:9/18, Type unknown (References: CBAT TOCP)

AT2017gyc (= Nova M81 2017-09a?) (= PNV J09553590+6904228) (= Gaia17cjg), ATEL 10767 discovered 2017/09/18.129 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m35s.900, Decl. = +69°04'22".80
Located 14".6 east and 27".7 north of the center of M81
Mag 18.7:9/18, Type unknown (References: TNS, CBAT TOCP, Gaia observations)

AT2017gud, (= PSP17D) TNS discovered 2017/09/17.655 by Zhijian Xu, Mi Zhang, Yi Ding, Peiyuan Sun and Xing Gao
Found in M31 at R.A. = 00h42m47s.080, Decl. = +41°16'00".30
Located 31".1 east and 8".2 south of the center of M31 (Discovery image) (Robert Spellman image) (Nick James image)
Mag 15.0:9/19, Type EGV

Nova M31 2017-09c (= AT2017gsc), TNS discovered 2017/09/13.854 by Emmanuel Conseil
Found in M31 at R.A. = 00h43m16s.100, Decl. = +41°20'08".30
Located 358".1 east and 239".8 north of the center of M31 (Nick James image) (George Carey image) (Denis Buczynski image) (Nick James image) (Thomas Langhans image) (Thomas Langhans image)
Mag > 20.5:10/22 (16.4:9/14), Type FeII (References: ATEL 10754)

Nova M31 2017-09b (= AT2017gqw) (= PNV J00425895+4126279) (= kait-17bw) (= MASTER OT J004259.00+412626.9), TNS discovered 2017/09/08.860 by George Carey
Found in M31 at R.A. = 00h42m58s.940, Decl. = +41°26'27".20
Located 164".6 east and 618".7 north of the center of M31 (Discovery image) (Nick James image) (Master image) (LOSS image) (George Carey image) (Denis Buczynski image) (Robert Spellman image) (Nick James image) (George Carey image) (Denis Buczynski image) (Ron Arbour image) (Nick James image) (Thomas Langhans image) (Thomas Langhans image)
Mag > 20.5:10/22 (16.7:9/14), Type FeII (George Carey light curve) (References: ATEL 10754, ATEL 10726)

AT2017glp, (= ASASSN-17lo) ATEL 10701 discovered 2017/09/03.319 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in LMC at R.A. = 05h12m45s.090, Decl. = -69°57'20".05
Located 3355".4 east and 718".0 north of the center of LMC
Mag 15.1:9/3, Type EGV (References: TNS)

Nova M31 2017-09a (= AT2017glc) (= PNV J00440872+4143367), TNS discovered 2017/09/01.775 by Peiyuan Sun and Xing Gao
Found in M31 at R.A. = 00h44m08s.720, Decl. = +41°43'36".70
Located 951".0 east and 1648".0 north of the center of M31 (Discovery image)
Mag 18.2:12/15, Type FeII (References: ATEL 10741, ATEL 11070, ATEL 11076, CBAT TOCP)

AT2017ggo (= PNV J00403063+4138525) (= Gaia17cdj), CBAT TOCP discovered 2017/08/20.717 by Koichi Itagaki
Found in M110 at R.A. = 00h40m30s.630, Decl. = +41°38'52".50
Located 95".6 east and 134".5 south of the center of M110 (Discovery image) (Andrea Mantero image) (Robert Spellman image) (Adriano Valvasori image) (Marc Serrau image) (Robert Spellman image)
Mag 17.0:8/27 (16.3:8/23), Type Extragalactic Nova (References: Gaia observations, TNS)

Nova M31 2017-08a? (= PNV J00423895+4115171), ATEL 10618 discovered 2017/08/03.840 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m38s.950, Decl. = +41°15'17".10
Located 61".0 west and 51".0 south of the center of M31 (Discovery image)
Mag 17.5:8/3, Type unknown (References: CBAT TOCP)

AT2017fvz, (= kait-17bm) TNS discovered 2017/08/02.366 by Lick Observatory Supernova Search
Found in NGC 6822 at R.A. = 19h45m01s.030, Decl. = -14°46'50".74
Located 58".6 east and 70".6 south of the center of NGC 6822 (Discovery image)
Mag 16.6:08/03, Type FeII (zhost=-0.000190) (References: ATEL 10630)

AT2017fvb, (= XM13AL) TNS discovered 2017/07/31.822 by Peiyuan Sun and Xing Gao
Found in M31 at R.A. = 00h42m47s.210, Decl. = +41°16'51".20
Located 32".6 east and 42".7 north of the center of M31 (Discovery image)
Mag 17.5:7/31, Type unknown

Nova M31 2017-07d (= PSN J00390448+4046041), CBAT TOCP discovered 2017/07/20.632 by Koichi Itagaki
Found in M31 at R.A. = 00h39m04s.480, Decl. = +40°46'04".10
Located 2497".0 west and 1804".0 south of the center of M31 (Discovery image)
Mag 17.9:07/24 (17.0:7/20), Type FeII (References: ATEL 10619)

Nova M31 2017-07c? (= PNV J00424126+4116102), ATEL 10585 discovered 2017/07/19.953 by Kamil Hornoch and Petr Fatka
Found in M31 at R.A. = 00h42m41s.260, Decl. = +41°16'10".20
Located 34".5 west and 1".7 north of the center of M31 (Discovery image)
Mag 16.1:7/19, Type unknown (References: CBAT TOCP)

Nova M31 2017-07b? (= AT2017fog) (= XMd3ZX) (= PNV J00431504+4120506), TNS discovered 2017/07/19.878 by Zhijian Xu and Xing Gao; Kamil Hornoch and Petr Fatka
Found in M31 at R.A. = 00h43m14s.980, Decl. = +41°20'49".80
Located 345".7 east and 281".3 north of the center of M31 (Discovery image) (K. Hornoch, P. Fatka image) (Zhijian Xu and Xing Gao image) (Thomas Langhans image)
Mag 19.8:8/27 (16.7:7/24), Type FeII (SCOPIO spctrum) (References: ATEL 10596, CBAT TOCP, ATEL 10588)

Nova M31 2017-07a (= AT2017foa), TNS discovered 2017/07/19.128 by Emmanuel Conseil
Found in M31 at R.A. = 00h43m14s.500, Decl. = +41°33'57".20
Located 339".4 east and 1068".7 north of the center of M31 (Discovery image)
Mag 18.4:7/19, Type FeII (References: ATEL 10619)

MASTER OT J004617.94+415626.1 (= PNV J00461806+4156251), ATEL 10506 discovered 2017/06/19.197 by MASTER robotic Net
Found in M31 at R.A. = 00h46m17s.940, Decl. = +41°56'26".10
Located 2385".0 east and 2417".0 north of the center of M31 (Discovery image) (K. Itagaki image)
Mag 18.1:7/8, Type unknown (References: CBAT TOCP)

MASTER OT J004127.19+410354.4, ATEL 10515 discovered 2017/06/21.205 by MASTER robotic Net
Found in M31 at R.A. = 00h41m27s.190, Decl. = +41°03'54".40
Located 871".0 west and 734".1 north of the center of M31 (Discovery image)
Mag 17.8:06/22, Type unknown

MASTER OT J004357.21+411135.2, ATEL 10506 discovered 2017/06/06.190 by MASTER robotic Net
Found in M31 at R.A. = 00h43m57s.210, Decl. = +41°11'35".20
Located 822".3 east and 273".3 south of the center of M31 (Discovery image)
Mag 18.6:6/6, Type LPV

Nova M31 2017-06f? (= PNV J00424379+4113295), ATEL 10507 discovered 2017/06/19.052 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m43s.790, Decl. = +41°13'29".50
Located 6".0 west and 159".0 south of the center of M31 (Discovery image)
Mag 17.7:6/19, Type unknown (References: ATEL 10522, CBAT TOCP)

Nova M31 2017-06e? (= AT2017epj) (= PNV J00410538+4030467) (= Gaia17bmf), CBAT TOCP discovered 2017/06/14.781 by Gaia Photometric Science Alerts programme; Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h41m05s.380, Decl. = +40°30'46".70
Located 1115".0 west and 2722".0 south of the center of M31
Mag 17.4:6/14, Type FeII (References: ATEL 10497, TNS, Gaia observations)

14 novae ATEL 10488 discovered by SPitzer InfraRed Intensive Transients Survey (SPIRITS)

SPIRITS17lk discovered 2017/05/28 at R.A. = 03h46m49s.27, Decl. = +68°03'52".9 Mag IR17.3:05/28, Type unknown (host IC 342)
SPIRITS17lg discovered 2017/05/28 at R.A. = 03h46m03s.55, Decl. = +68°08'48".2 Mag IR17.6:05/28, Type unknown (host IC 342)
SPIRITS17lc discovered 2017/05/28 at R.A. = 03h46m07s.32, Decl. = +68°07'59".0 Mag IR17.0:05/28, Type unknown (host IC 342)
SPIRITS17kw discovered 2017/05/19 at R.A. = 13h25m33s.08, Decl. = -43°00'51".6 Mag IR16.3:05/19, Type unknown (host NGC 5128)
SPIRITS17kq discovered 2017/05/19 at R.A. = 13h25m32s.03, Decl. = -43°00'41".3 Mag IR16.7:05/19, Type unknown (host NGC 5128)
SPIRITS17kp discovered 2017/05/19 at R.A. = 13h25m20s.33, Decl. = -42°59'20".2 Mag IR17.2:05/19, Type unknown (host NGC 5128) (near SPIRITS17bf)
SPIRITS17kj discovered 2017/05/19 at R.A. = 13h36m57s.42, Decl. = -29°50'19".1 Mag IR17.7:05/19, Type unknown (host M83)
SPIRITS17kf discovered 2017/05/19 at R.A. = 13h25m22s.18, Decl. = -43°01'17".5 Mag IR>16.8:05/19, Type unknown (host NGC 5128)
SPIRITS17kc discovered 2017/05/19 at R.A. = 13h25m29s.44, Decl. = -43°01'40".0 Mag IR16.1:05/19, Type unknown (host NGC 5128)
SPIRITS17ka discovered 2017/05/19 at R.A. = 13h37m16s.22, Decl. = -29°54'18".7 Mag IR18.0:05/19, Type unknown (host M83)
SPIRITS17fo discovered 2017/03/30 at R.A. = 12h18m50s.33, Decl. = +47°18'11".5 Mag IR17.7:03/30, Type unknown (host M106)
SPIRITS17fm discovered 2017/03/31 at R.A. = 14h03m01s.29, Decl. = +54°22'54".4 Mag IR17.0:03/31, Type unknown (host M101)
SPIRITS17fe discovered 2017/02/16 at R.A. = 23h57m44s.77, Decl. = -32°34'58".4 Mag IR16.5:02/16, Type unknown (host NGC 7793)

Nova M31 2017-06c (= PNV J00423291+4112236), ATEL 10484 discovered 2017/06/10.991 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m32s.910, Decl. = +41°12'23".60
Located 128".7 west and 224".9 south of the center of M31 (Discovery image)
Mag 18.2:6/10, Type FeII (References: ATEL 10487, ATEL 10522, CBAT TOCP)

Nova M31 2017-06b (= PNV J00425119+4116279), ATEL 10484 discovered 2017/06/10.991 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m51s.190, Decl. = +41°16'27".90
Located 77".4 east and 19".4 north of the center of M31 (Discovery image)
Mag 17.6:6/10, Type unknown (References: ATEL 10522, CBAT TOCP)

Nova M31 2017-06a? (= PNV J00423878+4115498), ATEL 10476 discovered 2017/06/07.994 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m38s.780, Decl. = +41°15'49".80
Located 62".5 west and 18".7 south of the center of M31 (Discovery image)
Mag 16.5:6/7, Type unknown (References: ATEL 10522, CBAT TOCP)

Nova M31 2017-05b (= AT2017ehm) (= Gaia17bjg) (= PNV J00424904+4112418) (= Nova M31 2017-06d?) TNS discovered 2017/05/23.533 by Gaia Photometric Science Alerts programme; Koichi Nishiyama and Fujio Kabashima
Found in M31 at R.A. = 00h42m49s.092, Decl. = +41°42'41".61
Located 53".6 east and 1593".1 north of the center of M31
Mag 17.4:6/14, Type EGN (References: ATEL 10520, Gaia observations, CBAT TOCP)

Nova M31 2017-05a (= AT2017egi) (= Gaia17biq) TNS discovered 2017/05/23.783 by Gaia Photometric Science Alerts programme
Found in M31 at R.A. = 00h42m18s.247, Decl. = +40°53'57".23
Located 294".8 west and 1331".3 south of the center of M31
Mag 18.0:5/23, Type FeIIb (References: ATEL 10432, Gaia observations)

Nova M81 2017-05b ATEL 10393 discovered 2017/05/03.890 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m38s.850, Decl. = +69°05'52".00
Located 30".3 east and 117".0 north of the center of M81
Mag 19.3:5/14, Type unknown

Nova M81 2017-05a ATEL 10393 discovered 2017/05/14.010 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m24s.610, Decl. = +69°06'59".10
Located 46".0 west and 184".0 north of the center of M81
Mag 20.9:5/14, Type unknown

Nova M31 2017-04b? (= PNV J00424610+4118390), ATEL 10317 discovered 2017/04/24.108 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h42m46s.100, Decl. = +41°18'39".00
Located 20".0 east and 150".5 north of the center of M31 (Discovery image)
Mag 16.3:4/24, Type EGN (References: ATEL 10451, CBAT TOCP)

Nova M81 2017-04c? (= AT2017dfw) (= PS17cko) TNS discovered 2017/04/07.256 by K. C. Chambers et al.; M. Henze et al.
Found in M81 at R.A. = 09h56m08s.380, Decl. = +68°56'33".93
Located 189".2 west and 441".1 south of the center of M81 (Discovery image)
Mag 21.7:4/20 (20.4:4/7), Type unknown (References: ATEL 10348, ATEL 10312)

Nova M81 2017-04b? (= PNV J09551279+6900093), ATEL 10290 discovered 2017/04/18.801 by R. Belligoli et al.
Found in M81 at R.A. = 09h55m12s.790, Decl. = +69°00'09".30
Located 109".4 west and 225".8 south of the center of M81 (Discovery image)
Mag 19.9:4/18, Type unknown (References: CBAT TOCP)

MASTER OT J004056.15+405819.1, ATEL 10268 discovered 2017/04/13.053 by MASTER robotic Net
Found in M31 at R.A. = 00h40m56s.150, Decl. = +40°58'19".10
Located 1222".4 west and 1069".4 south of the center of M31 (Discovery image)
Mag 16.7:4/13, Type unknown

Nova M81 2017-04a? (= AT2017dbo) (= PNV J09552544+6905239) (= PS17cgn), ATEL 10254 discovered 2017/04/07.282 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m25s.440, Decl. = +69°05'23".90
Located 41".4 west and 88".8 north of the center of M81 (Discovery image) (PS1 image)
Mag 19.7:4/11, Type FeII (References: ATEL 10276, TNS)

Nova M81 2017-03a, ATEL 10295 discovered 2017/03/22.910 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m28s.040, Decl. = +69°05'26".00
Located 27".5 west and 90".9 north of the center of M81
Mag 20.1:4/4 (19.9:3/22), Type unknown

Nova M31 2017-03b? (= PNV J00424502+4116395), ATEL 10166 discovered 2017/03/10.796 by Kamil Hornoch, Hana Kucakova and Jan Vrastil
Found in M31 at R.A. = 00h42m45s.020, Decl. = +41°16'39".50
Located 7".8 east and 31".0 north of the center of M31 (Discovery image)
Mag 17.3:3/10, Type unknown (References: CBAT TOCP)

Nova M31 2017-03a? (= PNV J00430201+4113190) (= AT2017cfr) (= Gaia17arh), ATEL 10139 discovered 2017/03/01.754 by Kamil Hornoch and Hana Kucakova
Found in M31 at R.A. = 00h43m02s.010, Decl. = +41°13'19".00
Located 199".0 east and 169".0 south of the center of M31 (Discovery image)
Mag 18.1:3/12, Type FeII (References: ATEL 10143, TNS, Gaia observations)

Nova M81 2017-02d? (= PNV J09555331+6858162), ATEL 10134 discovered 2017/02/24.119 by Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m53s.310, Decl. = +68°58'16".20
Located 108".2 east and 338".9 south of the center of M81 (Discovery image)
Mag 20.4:2/26, Type unknown

Nova M81 2017-02c?, (= AT2017blf) (= PNV J09563136+6907294), TNS discovered 2017/02/25.823 by Flavio Castellani, and Raffaele Belligoli, Claudio Marangoni, Fernando Marziali (ISSP); Kamil Hornoch et al.
Found in M81 at R.A. = 09h56m31s.360, Decl. = +69°07'29".40
Located 313".0 east and 209".0 north of the center of M81 (Discovery image (mirror)) (K. Hornoch image)
Mag 19.3:2/25, Type unknown (References: ATEL 10133, TOCP)

Nova M81 2017-02b?, ATEL 10101 discovered 2017/02/08.050 by S.C. Williams et al.
Found in M81 at R.A. = 09h55m27s.600, Decl. = +69°03'57".00
Located 29".9 west and 1".9 north of the center of M81
Mag 20.6:2/8, Type unknown

Nova M81 2017-02a? (= AT2017axz) (= SPIRITS17mj), TNS discovered 2017/02/19.920 by Flavio Castellani, Raffaele Belligoli, Claudio Marangoni and Fernando Marziali (ISSP); Kamil Hornoch et al.
Found in M81 at R.A. = 09h55m36s.180, Decl. = +69°06'21".00
Located 16".2 east and 145".9 north of the center of M81 (Discovery image) (K. Hornoch image)
Mag 19.3:2/19, Type unknown (References: ATEL 10102, ATEL 10903)

Nova M31 2017-02a? (= AT2017axi), TNS discovered 2017/02/18.746 by Raffaele Belligoli et al. (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)

17 supernovae ATEL 10171 discovered by SPitzer InfraRed Intensive Transients Survey (SPIRITS)

SPIRITS17eq discovered 2017/02/20 at R.A. = 01h35m01s.12, Decl. = -41°26'07".2 Mag IR16.9:2/20 (IR16.0), Type unknown (host NGC 625)

Nova M31 2017-01f? (= PNV J00425145+4118352), ATEL 10098 discovered 2017/01/22.720 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h42m51s.450, Decl. = +41°18'35".20
Located 80".3 east and 146".0 north of the center of M31 (Discovery image)
Mag 18.4:1/22, Type unknown

7 supernovae TNS discovered by Palomar Transient Factory

AT2017zr (= iPTF17zr) discovered 2017/01/31.117 at R.A. = 00h40m25s.339, Decl. = +40°59'52".74 Mag 19.9:1/31, Type unknown (host M31) (References: TNS)

AT2017zq (= Nova M31 2017-01e?) (= iPTF17zq) (= TCP J00441072+4154221) (= PNV J00441073+4154220) (= ZTF19abxnerq), 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) (XOSS image) (K. Itagaki image)
Mag 17.8:9/22/2019, Type He/N (Note: Recurrent nova) (References: ATEL 13153, ANTARES 5277540, ZTF observations ATEL 10042, TNS)

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 1570".5 west and 976".5 south 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)

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