Édouard Stephan discovered NGC 5277 = St XII-53 on 23 May 1881. His position is accurate.
400/500mm - 17.5" (6/7/97): extremely faint, very small, round, 20" diameter. Follows a group of four stars in a rectangular group (2 mag 12 + 2 mag 14) by ~4'. In field with NGC 5274, 5275 and 5280.
Notes by Steve Gottlieb