It is a representative of eclipsing variable stars of the beta Lyrae type. Both stars orbiting each other have the shape of a rotational ellipsoid. The star changes its brightness from 3.4mag to 4.4mag in a period of 12.908 days. Within the period, there is also a secondary minimum, during which the brightness decreases by 0.4mag. Suitable comparison stars are γ (3.25mag) and κ LYR (4.33mag).