William Herschel discovered NGC 3958 = H II-833 = h1014 on 18 Mar 1790 (sweep 951) and noted "F, S." JH made two similar observations and measured a more accurate position.

400/500mm - 18" (5/31/03): fairly faint, moderately large, elongated 5:2 SSW-NNE, slightly brighter core. A mag 14 star lies ~30" N. Located 8.2' SSW of NGC 3963.

Notes by Steve Gottlieb