Lewis Swift discovered IC 320 = Sw. VIII-35 on 14 Sep 1888 and recorded "eF; pS; R; vF * close p." His position is just off the west edge of UGC 2732 and the description of the nearby star matches.

600/800mm - 24" (12/20/17): at 225x and 375x; faint, small, slightly elongated WNW-ESE, 20"x15" (core region only), faint stellar nucleus. A very faint star [mag 15.3] is superimposed on the SW side that is similar in brightness to the nucleus, and a brighter mag 14.5 star is off the WNW edge [27" from center]. UGC 2730, an extremely low surface brightness edge-on 2.8' SSW, appeared extremely faint, fairly small, very elongated 3:1 NW-SE, ~20"x6"?. IC 320 is an outlying member of AGC 426 at the southeast edge of the cluster, 1.4° from NGC 1275.

Notes by Steve Gottlieb