Tags: Star.
Rho2 Cephei (ρ2 Cep / ρ2 Cephei) is a star in the constellation Cepheus. It has the traditional name Al Kalb al Rai. Rho2 Cephei is an optical double star located in the constellation Cepheus. The other component is Rho1 Cephei and somewhat less prominent. Rho2 Cephei is an A3V star with an apparent visual magnitude of +5.50 and absolute magnitude of +1.19. Rho2 Cephei is located 73 pc from the Sun.