Albert Marth discovered NGC 2728 = m 140 on 10 Mar 1864 (along with NGC 2725) and noted "vF, L, R, bM". His position matches UGC 4738 = PGC 25360.

400/500mm - 17.5" (3/29/89): very faint, fairly small, round, very small bright core, low surface brightness. Located along the south side of a very thin triangle formed by three mag 11-12 stars including a mag 12 star 2' W and pair of mag 11 stars 2' NE. Located 10' E of NGC 2725.

Notes by Steve Gottlieb