--- name: Sheliak (β Lyr) constellation: Lyr created_by: 8mag created_date: 2022-01-21 17:00:00 updated_by: skybber updated_date: 2022-02-10 16:44:31.113620 --- is a representative of the occultation variable beta Lyra type stars. The two stars orbiting each other have the shape of a rotating ellipsoid. The star changes brightness from 3.4mag to 4.4mag over a period of 12.908 days. Within the period, there is also a secondary minimum at which the brightness drops by 0.4mag. Suitable comparison stars are γ (3.25mag) and κ LYR (4.33mag).