Albert Marth discovered NGC 6577 = m 367 = Sf 30, along with NGC 6576, 6579 and 6580, on 7 Aug 1864 and noted "vF, S." His position is accurate. Truman Safford rediscovered this galaxy on 6 Jun 1866 with the 18.5-inch Clark refractor at the Dearborn Observatory. The discovery was not announced until the 1887 Dearborn Observatory publication.

400/500mm - 17.5" (7/16/88): faint, small, round, small bright core. A mag 14/15 double star is 1' E. Located in the NGC 6579/NGC 6580 group with NGC 6576 3.3' SW.

Notes by Steve Gottlieb