Tags: Star.
Alpha Comae Berenices (Alpha Com α Com α Comae Berenices) is a star in the constellation Coma Berenices (Berenice’s Hair). Although it has the Bayer designation alpha at magnitude 4.32 it is actually fainter than Beta Comae Berenices. It has the traditional name Diadem. It is said to represent the crown worn by Queen Berenice. A name occasionally seen is Al Dafirah from the Arabic الضفيرة ađ̧-đ̧afīrah the braid.
