Royal Frost discovered IC 3510 = F. 963 on a plate taken on 10 May 1904 at Harvard's Arequipa Observatory in Peru. He noted, "bM, magn. 15, 10 magn. star nf." His position is accurate.

600/800mm - 24" (5/20/17): at 375x; very faint, fairly small, low surface brightniess, no structure, 15" diameter. A mag 13.5 star at the northeast edge interferes with viewing. IC 3499 lies 8.6' NE.

Notes by Steve Gottlieb