John Herschel discovered NGC 6145 = h1957 on 12 May 1828, while observing nearby NGC 6146 (discovered by his father), and recorded "F; R; bM; sky very clear." His position is less than 1' south of CGCG 224-017 = PGC 58074. Nearby NGC 6147 was discovered at Birr Castle.

300/350mm - 13.1" (8/5/83): extremely faint, small, elongated N-S.

400/500mm - 17.5" (7/24/95): faint, fairly small, 1.0' diameter, slightly elongated N-S. Similar size to NGC 6146 but lacks the central concentration. Only a very weak brightening with no core or nucleus. Forms a trio with NGC 6146 3.6' SE and NGC 6147 1.4' SE.

17.5" (7/5/86): faint, weak concentration, elongated ~N-S. Forms a pair with NGC 6146 3.5' SE. Member of AGC 2197.

Notes by Steve Gottlieb