William Herschel discovered NGC 4598 = H III-105 on 15 Apr 1784 (sweep 194) and noted "eF but vL." CH's reduction is 18 sec of RA east of UGC 7829.

400/500mm - 18" (4/10/04): fairly faint, fairly small, round, 1.0' diameter, moderate concentration to center with a small, brighter core and quasi-stellar nucleus. A mag 14.5 star is just off the south edge (0.8' from center) and a mag 8.3 star lies 8.6' N near the edge of the 220x field.

18" (3/13/04): fairly faint, fairly small, irregularly round, 0.9'x0.8'. Located 8.6' S of mag 8.3 HD 110184.

Notes by Steve Gottlieb