The brightest star of the constellation. It is a short-period variable star and also a binary star, with components having an orbital period of 4.15 years, which can only be discerned through spectroscopic methods. The variation in its brightness in a period of 5.09 days is only within a range of 0.1mag and therefore cannot be observed with the naked eye. The star belongs to the type of stars α2 Canum Venaticorum, which also exhibit variations in their magnetic field.