16_Cephei
16 Cephei
Star in the constellation Cepheus
16 Cephei is a single[10] star located about 119 light years away from the Sun in the constellation of Cepheus. It is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 5.036.[2] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.174 arc seconds per annum.[11] It is moving closer to the Earth with a heliocentric radial velocity of −21 km/s.[5]
This is an ordinary F-type main-sequence star, somewhat hotter than the sun, with a stellar classification of F5 V.[3] It is around two[8] billion years old with a projected rotational velocity of 26.4 km/s.[4] The star has 1.38[7] times the mass of the Sun and 2.77[1] times the Sun's radius. It is radiating 11[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,238 K.[4] The star is a source of X-ray emission.[12]
There are several 11th and 12th magnitude stars within a few arc-minutes of 16 Cephei, all of them distant background objects.[1] Only one of these is listed in the Washington Double Star Catalog and Catalog of Components of Double and Multiple Stars as a companion.[13]