E.E. Barnard and Sherburne Burnham discovered IC 931 in a group around June 1892 with the 36" Lick refractor. Corwin and Steinicke identify IC 931 with LEDA 2508641, which is a close match with Barnard's position. Although this identification appears secure at first glance, due to Barnard's imprecise positions and the close separations of the galaxies, the identification is still uncertain (may be a positional coincidence). The group was photographed with the Mt Wilson 60" in 1919 (as well as Hubble for his PhD thesis) and Francis Pease identified LEDA 2509027 as IC 931. See IC 917 for more.

900/1200mm - 48" (5 /9/18): faint, extremely small, round, 6"-8" diameter. Located in the core of AGC 1783 2.5' WSW of mag 7.2 HD 119821. LEDA 2509027 (= IC 929) lies 51" NW.

Notes by Steve Gottlieb