Guillaume Bigourdan discovered IC 790 = Big. 173 on 6 Apr 1888, very near NGC 4410.

400/500mm - 17.5" (3/24/90): very faint, very small, elongated E-W. Forms a pair with NGC 4410 2' SW. CGCG 070-079, 2.3' NE, was not noticed.

600/800mm - 24" (6/4/16): at 225x; fairly faint, small, elonagated 3:2 E-W, 24"x16", very small brighter nucleus. Third of three in an interconnected quartet with CGCG 070-079 2.3' ENE and NGC 4410A/B contact pair 1.8' WSW. CGCG 070-079 appeared faint, small, elongated 2:1 WNW-ESE, 24"x12".

Notes by Steve Gottlieb