Guillaume Bigourdan discovered NGC 6122 = Big 78 on 6 May 1886. There is nothing at his Comptes Rendus (5 Dec 1887) position but his corrected position 6' further north (published in the Corrections table of his 1 Jul 1901 Comptes Rendus paper) matches MCG +06-36-032 = PGC 57858. The MCG doesn't label this galaxy with the NGC designation. See Harold Corwin's identification notes.

400/500mm - 17.5" (6/27/87): extremely faint, averted only, very small, round. Third and faintest of three in a group and located 4.6' ENE of NGC 6120 and 5.5' E of NGC 6119.

Notes by Steve Gottlieb