Arp 55

ARP 55 2017 Jan 19

Object:  ARP 55  (UGC 4881) Date:       2017 January 19
Peculiarity:    Spiral with small high surface-brightness companion on arm.
Constellation:           Lynx Time & altitude:   23.40 UT          73º
Catalogue data: Seeing (5 high):                               4/5
            R.A:                9h 16m Transparency (5 high):                 4/5
            Dec:                +44º 20 Telescope:     0.5m f4.1 Dob.
            Magnitude:    14.1 Eyepiece:      8mm Ethos      x260
            Galaxy size (mins): 1.0 x 0.9 Filters:            None


Known as the Grasshopper Galaxy. The HST website quotes a distance 500 million light years. I saw it as a faint oval glow visible most of the time with DV.  The oval is elongated 5:3 in an EW direction. There were hints of structure at the limit of visibility. The tidal tail which runs S from the E end of the galaxy was not seen.

A separate galaxy, PGC 26124 mag. 15.4 is nearby to the S. It is a small round glow readily seen with DV.