Lewis Swift discovered NGC 6198 = Sw. IV-37 on 28 Jun 1886 and recorded "vF; vS; R; forms right angle with 2 stars following." His position is 12 second east and 1' north of UGC 10467 = PGC 58554 and his description applies to this galaxy.

400/500mm - 17.5" (6/20/87): faint, small, slightly elongated, small bright core surrounded by a diffuse halo. Located 16' S of mag 7.4 SAO 30011.

17.5" (6/18/88): very faint, very small, round, low surface brightness.

Notes by Steve Gottlieb