Charles Augustus Young discovered NGC 6187 on 5 Oct 1883 with the 23" Clark refractor at Halsted Observatory while observing Comet Pons-Brooks. He called it a "minute nebula" that was "very faint, slightly brighter in the middle" and his discovery position in Sidereal Messenger, Vol II, page 252 matches CGCG 298-042 = PGC 58429.

400/500mm - 17.5" (6/20/87): faint, small, round, bright core. Located 3.4' S of a mag 8 star and 8.2' SSE of mag 7.7 SAO 29975.

17.5" (6/18/88): faint, very small, round, slightly brighter core. Located 3' S of a mag 8 star.

Notes by Steve Gottlieb