Kap-1

Its story

Kappa-1 Apodis is a spectroscopic binary system some 1,060 light-years away, made of a Be star and a rare subdwarf O companion circling each other every 192 days. The Be spins at dizzying speed and is wrapped in an unstable circumstellar disk that turns it into a Gamma Cassiopeiae-type variable, oscillating between magnitudes 5.43 and 5.61. An exotic pairing —hot ember and subdwarf— in the circumpolar Bird of Paradise.