Beta Cephei
Dec. 24, 2024
Alfirk - β Cephei (beta Cephei) - Star in Cepheus | TheSkyLive.com File:Beta cephei.jpg - Wikipedia The Beta Cephei Stars and Their Relatives | aavso Alfirk - β Cephei (beta Cephei) - Star in Cepheus | TheSkyLive.com | Beta Cephei