Lewis Swift discovered NGC 6055 = Sw. II-87 on 8 Jun 1886 and logged "eeeF; S; R; ee diff; 2nd of 4 [with N6053, N6056 and N6057]. Although his description is not of much help, his position is 5 seconds of time east of NGC 6053, also discovered the same night. Assuming NGC 6053 refers to UGC 10191, this implies NGC 6055 = CGCG 108-130. This contradicts modern sources, which apply NGC 6055 to UGC 10191 and NGC 6057 to CGCG 108-130. It also places NGC 6057 and NGC 6053 out of order in RA, but agrees with the historical record. See notes on NGC 6057 for more on these numbers.
400/500mm - 17.5" (6/14/96): extremely faint, very small, round, 20" diameter, low even surface brightness. Situated in the northeast portion of AGC 2151 1.7' ENE of brighter NGC 6057. Several faint galaxies lie northeast.
17.5" (5/28/89): extremely faint and small, round. Forms a close pair with NGC 6057 1.7' WSW in the northern region of AGC 2151.
Notes by Steve Gottlieb