Tags: Star.
Lambda Cassiopeiae (λ Cas λ Cassiopeiae) is a binary star in the constellation Cassiopeia. The system has a combined apparent magnitude of +4.74 and is approximately 355 light years from Earth.Both components are blue-white B-type main sequence dwarfs. The brighter λ Cassiopeiae A has an apparent magnitude of +5.5 while its companion λ Cassiopeiae B has an apparent magnitude of +5.8.