Asteria — interactive night sky map
NGC 891 is a galaxy in the constellation Andromeda with an apparent magnitude of 9.9, spanning about 13 arcminutes. A telescope is needed to observe it.
It is best placed in the evening sky around October. It is visible from the whole northern hemisphere and from southern latitudes down to about 48°S. It is circumpolar (never sets) north of latitude 48°N.