Asteria — interactive night sky map
Messier 102 is a galaxy in the constellation Draco with an apparent magnitude of 9.9, spanning about 6 arcminutes. A telescope is needed to observe it.
It is best placed in the evening sky around May. It is visible from the whole northern hemisphere and from southern latitudes down to about 34°S. It is circumpolar (never sets) north of latitude 34°N.