Édouard Stephan discovered NGC 5628 = St XIII-75 on 6 May 1883. His position is accurate.

400/500mm - 17.5" (7/22/01): fairly faint, fairly small, elongated 4:3 ~E-W, 0.8'x0.6'. Contains a very small brighter core and relatively bright stellar nucleus. Forms the SW vertex of an equilateral triangle with two mag 10/11 stars 6' NE and 6' E.

Notes by Steve Gottlieb