William Herschel discovered NGC 4583 = H III-495 = h1370 on 2 Jan 1786 (sweep 508) and recorded "eF, S, iF, r." His position is within 1' of CGCG 188-011 = PGC 42198. JH made two observations and called this galaxy "F; S; R; bM."

400/500mm - 17.5" faint, small, round, bright core. Two mag 15 star are 1' NW and 1' NE.

Notes by Steve Gottlieb