Delta Cassiopeiae is an eclipsing binary star system in the northern circumpolar constellation of Cassiopeia. Its name is a Bayer designation that is Latinized from δ Cassiopeiae, and abbreviated Delta Cas or δ Cas. Based on parallax measurements taken during the Hipparcos mission, it is approximately 99.4 light-years (30.5 parsecs) from the Earth. Delta Cassiopeiae is the primary or 'A' component of a multiple star system designated WDS J01258+6014. Delta Cassiopeiae's two components are therefore designated WDS J01258+6014 Aa and Ab. Aa is officially named Ruchbah , the traditional name for the system.

Closest relatives