NGC 2748
NGC 2748 is a spiral galaxy in the northern circumpolar constellation of Camelopardalis, located at a distance of from the Milky Way. It was discovered September 2, 1828 by British astronomer John Herschel.
Characteristics
The morphological classification of SAbc indicates NGC 2748 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, or 44 million times the mass of the Sun.Supernovae and Luminous Red Nova
Three supernovae and one luminous red nova have been observed in NGC 2748.- SN 1985A was discovered by Thomas Schildknecht on January 25, 1985, located west and south of the galaxy's nucleus.
- SN 2013ff was discovered by Raffaele Belligoli and Flavio Castellani on August 31, 2013. It was positioned west and north of the core of NGC 2748, and eventually reached magnitude 15.2.
- AT 2015fx was discovered by Kōichi Itagaki on 10 February 2015. The transient was originally classified as a luminous blue variable, a type of supernova impostor. Later analysis concluded that it was actually a luminous red nova.
- SN 2017gkk was discovered by MASTER on 19 August 2017, and independently by Kōichi Itagaki on 31 August 2017.