Messier 102 (also M102, The Spindle Galaxy, NGC 5866, UGC 9723 and PGC 53933) is a magnitude +10.7 lenticular or edge-on spiral galaxy located 50 ±3 million light-years away in the constellation Draco.
The galaxy was discovered by French astronomer Pierre Méchain using a 15.24 cm (6 inch) reflector on the 27th March 1781. The galaxy was observed by Charles Messier in May 1788 and listed as M102.
Right Ascension 15h 06m 29.5s, Declination +55° 45' 48"
Messier 102 (also known as M102) is a galaxy listed in the Messier Catalogue that has not been identified unambiguously. Its original discoverer Pierre Méchain later claimed that it was a duplicate observation of Messier 101, but there are historical and observational reasons to believe that it would actually be NGC 5866, although other galaxies have been suggested as possible identities. Read more