Alpha Comae Berenices

Alpha Comae Berenices is a binary star system in the northern constellation of Coma Berenices (Berenice's Hair). Its name is a Bayer designation, which is Latinized from α Comae Berenices. With a combined apparent visual magnitude that varies 4.29 to 4.35, it is faintly visible to the naked eye. Based on parallax measurements, it is located at a distance of 58 light-years (17.8 pc) from the Earth.

This system consists of two main sequence stars, each a little hotter and more luminous than the Sun. The two components are designated Alpha Comae Berenices A and B. Component A is officially named Diadem, the traditional name for the system.