Albert Marth discovered NGC 6579 = m 368, along with NGC 6580, 6576 and 6577, on 7 Aug 1864 and noted "F, Dneb [with NGC 6580]." His position is less than 1' north of CGCG 142-022 = PGC 61562.
CGCG misidentifies CGCG 142-020 as NGC 6579 = NGC 6580. This galaxy is 11' NNE of the NGC 6579/6580 double system.
400/500mm - 17.5" (7/16/88): very faint, very small, slightly elongated. A mag 15.5 star is 30" SW (this is a double star on the POSS). Nearly attached at the SW edge of NGC 6580 (34" separation) in a large group.
Notes by Steve Gottlieb