NGC_2748
NGC 2748
Galaxy in the constellation Camelopardalis
NGC 2748 is a spiral galaxy in the northern circumpolar constellation of Camelopardalis,[6] located at a distance of 61.3 megalight-years from the Milky Way.[3] It was discovered September 2, 1828 by John Herschel.[6] The morphological classification of SAbc[5] indicates this is an unbarred spiral with moderate to loosely-wound spiral arms. It is a disk-like peculiar galaxy with a stellar shell that is rotating about the main galactic axis. This shell was most likely formed through the capture and disruption of a dwarf companion.[7] The galactic nucleus likely contains a supermassive black hole with a mass of 4.4+3.5
−3.6×107 M☉, or 44 million times the mass of the Sun.[5]
A magnitude 14.5 supernova, designated SN 1985A, was discovered in this galaxy on January 25, 1985. It was located 3″ west and 10″ south of the galaxy's nucleus,[8] and was later classified as a type Ia supernova.[9] On August 31, 2013, a supernova event was reported at a position 19″ west and 21″ north of the core of NGC 2748. It was designated SN 2013ff and reached magnitude 15.2. Subsequent studies found a best match to a type Ic supernova.[10] The discovery of a supernova impostor in this galaxy was announced February 10, 2015.[11] During September 2017, the discovery of supernova SN2017gkk in host galaxy NGC 2748 was announced.[12]