NGC 846 (also known as NGC 847) is a barred spiral galaxy located around 235 million light-years away in the constellation Andromeda. NGC 846 was discovered on November 22, 1876 by the French astronomer Édouard Stephan, and it has a diameter of around 162,000 light-years. NGC 846 is not known to have much star-formation, and it is not known to have an active galactic nucleus.
Supernovae
Two supernovae have been observed in NGC 846:
- SN 2003ja (Type II, mag. 17.1) was discovered by the Lick Observatory Supernova Search (LOSS) on 22 October 2003.
- SN 2009fu (Type Ia, mag. 15.7) was discovered by Kōichi Itagaki on 1 June 2009.
LGG 46 Group
It is part of a galaxy group known as NGC 812 Group or LGG 46. It has at least 3 members, which are NGC 812, NGC 846 and UGC 1686.
