Asteria — interactive night sky map
NGC 457 is a open cluster in the constellation Cassiopeia with an apparent magnitude of 6.4, spanning about 8 arcminutes. It is within reach of binoculars or a small telescope.
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 32°S. It is circumpolar (never sets) north of latitude 32°N.