Delta Cephei
Star system
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Delta Cephei is a quadruple star system located approximately 887 light-years away in the northern constellation of Cepheus, the King. At this distance, the visual magnitude of the star is diminished by 0.23 as a result of extinction caused by gas... Wikipedia
Apparent magnitude (V): 2.354
Distance to Earth: 887.1 light years
Radius: 44.5 R☉
Period: 5.366 days
Absolute magnitude (MV): –3.47 ± 0.10 (–3.94 - –3.05)
Age: ~100 Myr
B−V color index: 0.60