Object name: ARP263
ARP 263/NGC 3239 is thought to be the merger of two galaxies. It was discovered by William Herschel on March 21, 1784. It failed to make either of the Herschel 400 observing programs. I find no records that I ever viewed this one visually. When displayed with south up it looks much like the Minnesota state bird, the loon. Though it has a spike for a tail a loon doesn't have. The spike is likely a trail left by one of the merging galaxies. The head is likely the trail of the other merging galaxies. I suspect the spike tail is straight only from our viewpoint. Seen from the "side" I expect it to is curved. The head trail has superimposed on it a red star at just about the spot the loon has a red eye. It also has a white neckband right where two bright star-forming regions and the supernova make a bright area. I've included a picture of a loon family for those unfamiliar with this large diving bird (it is not a duck) that can dive over 200 feet deep and has solid rather than hollow bones. Being so heavy it needs a lot of runway to get airborne and gains altitude very slowly. When I imaged in on January 21, 2012 it contained a supernova that I've marked in the annotated image. Its resemblance to the loon is best seen when displayed south up rather than my usual north up orientation.
Related Designation(s):11HUGS 192, 2MASS J10250491+1709490, 2MASX J10250486+1709492, 2MASXi J1025056+170937, ARP 263, ARP263, ASK 648015.0, CGCG 094-038, CGCG 1022.4+1725, HIPASS J1025+17, IRAS 10224+1724, IRAS F10223+1724, KPG 236, LCSB L0414O, LDCE 0778 NED001, MCG +03-27-025, NGC 3239, NSA 117340, PGC 030560, SDSS J102504.88+170949.4, UGC 05637, UZC J102505.8+170939, VV 095, WBL 270-001, [TCW2007] 077,