Andrew Ainslie Common discovered NGC 3490 in 1880 with his 36" silvered-glass reflector. His approximate position is 0.4 min of RA west of CGCG 066-080 = PGC 33128. Neither MCG or CGCG label this galaxy as NGC 3490. See Thomson's CGCG Corrections and Corwin's notes.

400/500mm - 18" (5/15/10): at 220x appeared as a faint, very small, round glow, just 15" diameter. The surface brightness was fairly low and occasionally a very faint stellar nucleus was glimpsed. Located 1.5' NW of a mag 12 star.

Notes by Steve Gottlieb