UGC 12915 IC 5145
Peg
☀13.4mag
Ø 90'' / 36''

300/350mm - 13.1" (7/12/86): fairly faint, very small bright core, fainter halo elongated WSW-ENE. Located 1.6' NNE of a mag 9 star. This is one of the most massive known spiral galaxies (600 billion solar masses).

600/800mm - 24" (8/30/16): moderately bright, elongated 5:2 or 3:1 SW-NE, sharply concentrated with a very small bright nucleus. There is a sharp light cut-off along the south edge due to a dust lane and the halo was more rounded or bulged out on the north side. The portion of the galaxy south of the dust lane was not seen with certainty. Located 1.6' N of a mag 10.0 star.