(abbrev. Cep, gen. Cephei; area 588 sq. deg.) A northern constellation which lies between Draco and Cassiopeia, and culminates at midnight in late August. It is named after King Cepheus, husband of Queen Cassiopeia and father of Andromeda in Greek mythology. Its brightest stars were cataloged by Ptolemy (c. AD 100–175) in the Almagest.