Albert Marth discovered NGC 2813 = m 159 on 17 Feb 1865, along with NGC 2812, and simply noted "F". His position is 1.5' north of CGCG 091-060.

400/500mm - 17.5" (3/12/94): very faint, round, very low surface brightness halo difficult to view. At first glance, only the core was noticed with a tiny quasi-stellar nucleus. Overpowered by mag 9.0 SAO 80743 2.0' SW. Forms a pair with NGC 2812 at 1.3' NW (not seen). Located 13' SE of NGC 2809 in a group.

Notes by Steve Gottlieb