Édouard Stephan discovered NGC 2528 = St VIIIb-25 on 22 Jan 1877, along with NGC 2528. Through a mix-up in measuring the offset, Stephan's position for NGC 2528 is southeast of NGC 2524, instead of northwest. Corwin sorted out the situation (see his notes for NGC 2528), although it was first corrected by Esmiol in his 1916 re-reduction of Stephan's positions. Esmiol's new position (calling the object "Anon"), establishes NGC 2528 = UGC 4227. UGC 4227 is not labeled with the NGC designation in CGCG (207-032), UGC (4227) or MCG (+07-17-015) but it is correctly identified in RNGC, PGC and RC3.

400/500mm - 17.5" (2/24/90): faint, fairly small, round, almost even surface brightness. Forms a pair with NGC 2524 10' ESE.

Notes by Steve Gottlieb