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16 Persei
Star in the constellation Perseus From Wikipedia, the free encyclopedia
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16 Persei is a single,[12] suspected variable star[6] in the northern constellation of Perseus, located approximately 121 light years away based on parallax.[1] It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22.[2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s.[7] It displays a relatively high proper motion, traversing the celestial sphere at the rate of 0.224″ per year.[13]
Based upon a stellar classification of F2 III,[3] this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence. It is a possible pulsating Delta Scuti variable, although there is some uncertainty about this classification.[6] However, Kunzli and North (1998) found no variation.[15] The star is 1.44[8] billion years old with 1.8[8] times the mass of the Sun and 3.2[9] times the Sun's radius. It shows a high rotation rate with a projected rotational velocity of 149 km/s,[3] which is causing an equatorial bulge that is an estimated 24% larger than the polar radius.[16] 16 Persei is radiating 23[2] times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K.[10]
It has two reported visual companions: B, with a magnitude of 12.8 and separation of 76.7", and C, with magnitude 10.43 and separation 234".[17]
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