MCG+02-31-091, PGC 39644, SDSS J121917.19+120058.2
0.31' x 0.248' @ 60°
12h 19' 17.3" (2000)
12° 0' 58" N
vF, vS, stell
IC 3147, like IC 3142 (which see), is probably the brighter of a pair. However, it was found by Schwassmann rather than Frost. On the 6-inch plate, Schwassmann describes it as "vF, vS, like a star, probably nebulous", and puts the position between the two galaxies. Could there be a defect involved, too?
So, while I'm inclined to take the brighter galaxy as IC 3147, I'm not at all sure.