John Herschel discovered NGC 529 = h118 on 17 Nov 1827 and recorded "pB; vS; sbM. The preceding of two [NGC 536]. Corwin suggests that NGC 529 = UGC 995 was probably discovered earlier by William Herschel and catalogued as H III-171, but with an error in RA of over 1 minute of time. But Wolfgang Steinicke argues that III-171 refers to[NGC 536, based on analyzing the sweep order. R.J. Mitchell, LdR's assistant, discovered the other two members of HCG 10 in 1855.

300/350mm - 13.1" (12/22/84): faint, diffuse. Located among group of 4-5 mag 10-11 stars with a mag 6 star 10' ESE. Brightest in a group.

400/500mm - 17.5" (8/31/86): moderately bright, fairly small, bright core. Located 10' NW of mag 6.3 SAO 54695. NGC 529, along with NGC 536 8.5' E, are the two brightest members of the HCG 10 group.

Notes by Steve Gottlieb