Kappa1 Apodis
Kappa1 Apodis is a binary star system in the southern circumpolar constellation of Apus. Its idetifier is a Bayer designation that is Latinized from κ1 Apodis, and abbreviated Kap1 Aps or κ1 Aps, respectively. Based upon parallax measurements, it is located roughly from Earth. The combined apparent visual magnitude of the system is 5.52, indicating that this is a faint, naked eye star that can be viewed in dark suburban skies. It is moving away from the Sun with a radial velocity of +62 km/s.
This is a spectroscopic binary system, made up of a Be star and a subdwarf O star, which complete an orbit around each other every 192 days. The combined spectrum matches a stellar classification of B1npe. The 'e' suffix indicates that this is a Be star with emission lines in the spectrum. An 'n' means that the absorption lines in the spectrum are broadened from the Doppler effect as a result of rapid rotation. Finally, the 'p' shows some peculiarity in the spectrum. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +5.43 to +5.61.
This is a runaway star with a peculiar velocity of. Because it is a binary star system, it was most likely not turned into a runaway system as the result of a supernova explosion.
A 12th-magnitude orange K-type subgiant located at an angular separation of 27 arcseconds has a much smaller parallax than Kappa1 Apodis and is a distant background object.