Asteria — interactive night sky map
NGC 147 is a galaxy in the constellation Cassiopeia with an apparent magnitude of 9.5, spanning about 9 arcminutes. It is within reach of binoculars or a small telescope.
It is best placed in the evening sky around September. It is visible from the whole northern hemisphere and from southern latitudes down to about 41°S. It is circumpolar (never sets) north of latitude 41°N.