Extragalactic Novae - 2003

This data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 2003 updates to this page is available.

Due to the large number of Extragalactic Novae announced in 2003 I have decided to give these novae their own archive, so that you don't need to hunt through the main 2003 supernova archive to find them.   Sometimes these novae go unreported to CBAT.   If you know of any, please e-mail me and I will include them here. On these pages, I only report extragalactic events.   I draw the line at NGC 2419.   Anything closer is a "galactic event".   The names for these novae are durived from the CBAT naming convention for novae in the SMC and LMC.   Note that I assigned these names, not CBAT.   The CBAT convention for referring to them is "nova xxx in IAUC yyyy", which is difficult to use if a nova does not appear in an IAUC.  

This is a list of the Extragalactic Novae discovered in 2003.   Current Novae can be found on the main page.  

Interesting events for 2003:
• 18 novae were reported in M31
• 3 novae were reported in galaxies which are not part of the M31 complex.
• 2003gm turned out to not be a supernova, but a very bright Eta Carini type event (Extra galactic variable star).
• 2 suspected extragalactic novae turned out to be galactic variables Variable near UGC 10700, and Variable near NGC 6822

Nova M81 2003 7, Unannounced discovered 2003/05/09.883 by K. Hornoch Found in M81 at R.A. = 09h54m53s.85, Decl. = +69°01'11".1 Located 211.0" west and 164.0" south of the center of NGC 3031 (= M81) (Discovery image) Mag 25.9 (5/9:19.6), Extragalactic Nova

Nova M81 2003 6, Unannounced discovered 2003/05/09.883 by K. Hornoch Found in M81 at R.A. = 09h55m27s.19, Decl. = +69°04'17".1 Located 32.1" west and 22.0" north of the center of NGC 3031 (= M81) (Discovery image) Mag 22.4 (5/9:18.7), Extragalactic Nova

Nova M81 2003 5, Unannounced discovered 2003/05/21.932 by K. Hornoch Found in M81 at R.A. = 09h56m07s.47, Decl. = +69°03'57".0 Located 183.8" east and 1.9" north of the center of NGC 3031 (= M81) (Discovery image) Mag 19.0, Extragalactic Nova

Nova M81 2003 4, Unannounced discovered 2003/09/18.382 by K. Hornoch Found in M81 at R.A. = 09h55m33s.27, Decl. = +69°03'37".5 Located 0".5 east and 17".6 south of the center of NGC 3031 (= M81) (Discovery HST (I) image) (HST (H) image) Mag 23.7, Extragalactic Nova

Nova M81 2003 3, Unannounced discovered 2003/09/18.382 by K. Hornoch Found in M81 at R.A. = 09h55m53s.81, Decl. = +69°02'10".6 Located 110".7 east and 104".5 south of the center of NGC 3031 (= M81) (Discovery HST (I) image) (HST (H) image) Mag 23.28, Extragalactic Nova

Nova M81 2003 2, Unannounced discovered 2003/09/18.382 by K. Hornoch Found in M81 at R.A. = 09h55m40s.76, Decl. = +69°02'35".5 Located 40".7 east and 79".6 south of the center of NGC 3031 (= M81) (Discovery HST (I) image) (HST (H) image) Mag 20.24, Extragalactic Nova

Nova M31 2003 18, IAUC 8262 discovered 2003/12/20.708 by Observatory G. Colombo Found in M31 at R.A. = 00h42m54s.08, Decl. = +41°15'12".1 Located 110" east 56" south of the center of NGC 224 (= M31) (Discovery image) Mag 19.4 (12/23:16.4), Extragalactic Nova (References: IAUC 8266)

Nova M31 2003 17, IAUC 8262 discovered 2003/12/20.708 by Observatory G. Colombo Found in M31 at R.A. = 00h42m53s.22, Decl. = +41°22'35".5 Located 100" east 387" north of the center of NGC 224 (= M31) (Discovery image) Mag 19.4 (12/23:15.7), Extragalactic Nova (References: IAUC 8266)

Nova M31 2003 16, IAUC 8262 discovered 2003/12/19.696 by Martin Mobberley Found in M31 at R.A. = 00h43m04s.77, Decl. = +41°12'20".8 Located 231" east and 226" south of the center of NGC 224 (= M31) (Discovery image (local mirror)) (Marco Fiaschi image) (Kamil Hornoch image) Mag 18.6 (12/19:16.7), Extragalactic Nova (References: IAUC 8266) Note: The first and 4th nova reported in IAUC 8262 are the same object.

Nova M31 2003 15, IAUC 8253 discovered 2003/12/03.772 by Observatory G. Colombo Found in M31 at R.A. = 00h43m00s.75, Decl. = +41°11'26".7 Located 185" east and 282" south of the center of NGC 224 (= M31) (Marco Fiaschi image) Mag 18.9 (12/3:15.8), Extragalactic Nova (References: IAUC 8254, 8262)

Nova M31 2003 14, IAUC 8248 discovered 2003/11/09.073 by Kamil Hornoch; Observatory G. Colombo Found in M31 at R.A. = 00h42m53s.64, Decl. = +41°18'45".9 Located 105" east and 157" north of the center of NGC 224 (= M31) (Kamil Hornoch discovery image) Mag 18.7 (11/9:16.9), Extragalactic Nova (References: IAUC 8253)

Nova M31 2003 13, IAUC 8238 discovered 2003/10/25.942 by Observatory G. Colombo Found in M31 at R.A. = 00h42m44s.43, Decl. = +41°15'52".3 Located 1".2 east and 16".2 south of the center of NGC 224 (= M31) (Marco Fiaschi image) Mag 16.0, Extragalactic Nova

Nova M31 2003 12, IAUC 8226 discovered 2003/10/15.865 by Observatory G. Colombo; Kamil Hornoch and Peter Kusnirak Found in M31 at R.A. = 00h42m41s.11, Decl. = +41°16'16".1 Located 36".2 west and 7".6 north of the center of NGC 224 (= M31) (Kamil Hornoch discovery image) (Marco Fiaschi discovery image) Mag 17.9 (10/15:15.9), Extragalactic Nova (References: IAUC 8231, 8248)

Nova M31 2003 11, IAUC 8222 discovered 2003/10/06.908 by Observatory G. Colombo Found in M31 at R.A. = 00h42m03s.11, Decl. = +41°14'50".6 Located 465" west and 78" south of the center of NGC 224 (= M31) (Marco Fiaschi image) Mag 18.9 (10/6:16.7), Extragalactic Nova (References: IAUC 8248, 8249)

Nova M31 2003 10, IAUC 8222 discovered 2003/09/30.835 by Kamil Hornoch Found in M31 at R.A. = 00h42m46s.72, Decl. = +41°19'46".7 Located 26" east and 219" north of the center of NGC 224 (= M31) (Discovery image) (Giovanni Sostero image) (Marco Fiaschi image) (Marco Fiaschi image) Mag 18.3, Extragalactic Nova (References: IAUC 8231, 8238)

Nova M31 2003 9, IAUC 8210 discovered 2003/08/31.78 by T. A. Rector Found in M31 at R.A. = 00h42m49s.61, Decl. = +41°18'01".8Located 118" east and 5".6 north of the center of NGC 224 (= M31) (Marco Fiaschi image) Mag 17.4, Extragalactic Nova (References: IAUC 8222)

Nova M31 2003 8, IAUC 8205 discovered 2003/09/17.16 by Tom Boles Found in M31 at R.A. = 00h42m59s.84, Decl. = +41°03'33".9 Located 175" east and 755" south of the center of NGC 224 (= M31) (Discovery image (local mirror)) (Odd Trondal image) (Josep M. Bosch image) (Koichi Itagaki image) Mag 18.1, Extragalactic Nova

Nova M33 2003, IAUC 8195 discovered 2003/09/01.4 by LOTOSS Found in M33 at R.A. = 01h33m51s.16, Decl. = +30°39'50".2 Located 3".3 east and 14".4 north of the center of NGC 598 (= M33) (Discovery image) (Koichi Itagaki image) (Odd Trondal image) (Federico Manzini image) (Federico Manzini image) (Federico Manzini image) (Jean-Yves Beninger image) Mag 17.1 (9/1:16.9), Extragalactic Nova (References: IAUC 8199, 8234)

Nova M31 2003 5, IAUC 8165 discovered 2003/07/14.99 by Kamil Hornoch Found in M31 at R.A. = 0h42m15s.81, Decl. = +41°12'00".5 Located 318" west and 252" south of the center of NGC 224 (= M31) (Discovery images) Mag 17.5 (7/16:16.9), Extragalactic Nova (References: CBET 28)

Nova M31 2003 4, IAUC 8157 discovered 2003/06/21.021 by Kamil Hornoch Found in M31 at R.A. = 0h43m36s.17, Decl. = +41°16'39".4 Located 583" east and 30" north of the center of NGC 224 (= M31) (Discovery page) (Discovery image (PGN)) (Kamil Hornoch image (PGN)) (Kamil Hornoch image (PGN)) Mag 16.4, Extragalactic Nova

Nova M31 2003 3, IAUC 8155 discovered 2003/06/19.034 by Astronomical Observatory G. Colombo Found in M31 at R.A. = 00h42m52s.22, Decl. = +41°13'54".2 Located 89" east and 134" south of the center of NGC 224 (= M31) (Marco Fiaschi image) Mag 15.7, Extragalactic Nova

Nova M31 2003 2, IAUC 8155 discovered 2003/06/19.034 by Astronomical Observatory G. Colombo Found in M31 at R.A. = 0h42m58s.34, Decl. = +41°16'07".8 Located 158" east and 1" south of the center of NGC 224 (= M31) (Marco Fiaschi image) (Marco Fiaschi image) Mag 16.6, Extragalactic Nova

Variable near UGC 10700, IAUC 8153 discovered 2003/06/17.4 by LOTOSS Found near UGC 10700 at R.A. = 17h06m06s.12, Decl. = +25°51'53".3 Located 51".5 east and 79".9 south of the nucleus of UGC 10700 (Discovery image) Mag 16.5, Type variable star (this is a galactic object). (References: IAUC 8158; vsnet-campaign-sn 644, 649, 651)

Variable near NGC 6822, IAUC 8141 discovered 2003/03/28.4 by LOTOSS Found in NGC 6822 at R.A. = 19h45m04s.18, Decl. = -14°03'45'46".5 Located east and north of the center of NGC 6822 (Discovery image) Mag 18.5*, Type variable star (this is a galactic object) (References: IAUC 8158)

Nova M81 2003, IAUC 8069 discovered 2003/02/09.4 by LOTOSS Found in NGC 3031 at R.A. = 9h55m48s.59, Decl. = +69°03'04".3 Located 82".6 east and 50".8 south of the nucleus of NGC 3031 (= M81) (Discovery image) Mag 22: (2/9:17.8), Extragalactic Nova (References: IAUC 8086; vsnet-campaign-sn 557)

Nova M31 2003, IAUC 8052 discovered 2003/01/08.1 by LOTOSS; Padua group Found in M31 at R.A. = 00h42m15s.75, Decl. = +41°13'24".6 Located 323" west and 164" south of the nucleus of NGC 224 (= M31) (LOTOSS discovery image) (Padua group discovery image) Mag < 17.5 (1/11:15.8), Extragalactic Nova

Nova NGC 185 2003, IAUC 8047 discovered 2003/01/05.1 by LOTOSS Found in NGC 185 at R.A. = 00h39m06s.07, Decl. = +48°22'56".4 Located 81".4 east, 162".0 north of the center of NGC 185 (Discovery image) Mag 18.5* (1/5:18.4), Extragalactic Nova

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