NGC 2748

NGC 2748 is a spiral galaxy in the northern circumpolar constellation of Camelopardalis, located at a distance of 18.79 Mpc from the Milky Way. It was discovered September 2, 1828 by John Herschel. The morphological classification of SAbc 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. The galactic nucleus likely contains a supermassive black hole with a mass of $1,473 km/s$, or 44 million times the mass of the Sun.

A magnitude 14.5 supernova, designated SN 1985A, was discovered in this galaxy on January 25, 1985. It was located $4.4 solar mass$ west and $3 arcsecond$ south of the galaxy's nucleus, and was later classified as a type Ia supernova. On August 31, 2013, a supernova event was reported at a position $10 arcsecond$ west and $19 arcsecond$ 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. The discovery of a supernova impostor in this galaxy was announced February 10, 2015. During September 2017, the discovery of supernova SN2017gkk in host galaxy NGC 2748 was announced.