Kappa Cephei

Kappa Cephei is a binary star system in the northern circumpolar constellation of Cepheus. Its name is a Bayer designation that is Latinized from κ Cephei, and abbreviated Kappa Cep or κ Cep. It is visible to the naked eye as a faint, blue white-hued point of light with an apparent visual magnitude is 4.39. The system is located approximately distant from the Earth, based on parallax measurements. It is drifting closer to the Sun with a line of sight velocity component of −23 km/s.
The two gravitationally-bound members of this system had an angular separation of along a position angle of 120°, as of 2015. The primary, designated component A, has a stellar classification of B9III, presenting as a blue giant. The magnitude 8.34 secondary, component B, is an A-type main-sequence star of class A7V. A third star of 10th magnitude, BD+77 763, is listed as component C in the Washington Double Star Catalog although it is a background object unrelated to the other two.