| NGC 5278 | |
|---|---|
 NGC 5278 (right) imaged by theHubble Space Telescope | |
| Observation data (J2000epoch) | |
| Constellation | Ursa Major |
| Right ascension | 13h 41m 39.618s |
| Declination | +55° 40′ 14.341″ |
| Apparent magnitude (B) | 13.6 |
| Surface brightness | 21.72 mag/arcsec2 |
| Other designations | |
| IRAS 13397+5555,Arp 239 NED01,UGC 8677,MCG +09-22-101,Mrk 0271b,PGC 48473,CGCG 271-058 NED01,VV 019a | |
NGC 5278 is aspiral galaxy in the constellationUrsa Major. It was discovered by German-BritishastronomerWilliam Herschel in 1789.[1]
NGC 5278 is in gravitational interaction with the galaxyNGC 5279. This pair of galaxies appears in theHalton Arp'sAtlas of Peculiar Galaxies under the symbolArp 239. Theluminosity class of NGC 5278 is II.[2] The nucleus of this galaxy presents a burst ofstar formation (SBNG starburst nucleus galaxies) and it is an activeSeyfert 2 type galaxy. In addition, NGC 5278 is possibly aLINER galaxy, a galaxy whosenucleus presents an emission spectrum characterized by broad lines of weakly ionizedatoms.[3] NGC 5278 is also a galaxy whose core shines in theultraviolet spectrum. It is listed in theMarkarian catalog under the reference Mrk 271 (MK 271).[4]
Twosupernovae have been observed in NGC 5278: SN 2001ai (type Ic, mag. 17.6)[5] and SN 2019cec (type II, mag. 18.26a).[6]
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