John Herschel discovered NGC 4924 = h1517 on 8 May 1831 and recorded "vF; R; bM." He confirmed the observation the next night and logged "vF; irreg R; vglbM." Because his position was 1° south of his father's H II-300 = NGC 4899, he initially assumed h1517 was identical, but realized his error when compiling the GC.

400/500mm - 18" (6/4/05): fairly faint, small, 0.5' diameter, irregularly round, slightly brighter corre. With direct vision a very faint stellar nucleus is intermittently visible or an extremely faint star is superimposed. A small triplet of mag 13/14 stars lies 3.5'-4' SE and a mag 10.2 star is in the same direction 6.2' SE. Forms a pair with MCG -02-33-093 5.7' NNW.

Notes by Steve Gottlieb