Lawrence Parsons, the 4th Earl of Rosse, discovered NGC 2875 on 7 Mar 1874 and labeled it as Gamma on the same sketch with NGC 2871, 2872, and 2873. His offset from NGC 2874 (42" in PA 37°) falls on a slightly brighter section of the northeastern spiral arm of NGC 2874. RNGC equates the number with NGC 2874, though a more appropriate classification would be part of NGC 2874.

900/1200mm - 48" (2/21/12): at 375x, the northeast extension (arm) of NGC 2874 is slightly brighter, particularly along the eastern side.

Notes by Steve Gottlieb