22 Camelopardalis
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22 Camelopardalis is a binary star system in the northern circumpolar constellation of Camelopardalis,[7] located 212 light years away from the Sun.[1] It has an apparent visual magnitude of 7.03,[2] which is below the normal limit for visibility with the naked eye. This object is moving further from the Earth with a mean heliocentric radial velocity of +10 km/s.[4] Eggen (1991) listed it as a member of the IC 2391 supercluster.[8] It has also been catalogued as a member of the Hyades group. However, Griffin (2005) suggests it belongs to neither.[5]
This is a single-lined spectroscopic binary system with an orbital period of 81.5 days and a significant eccentricity of 0.14. It has an 'a sin i' value of Script error: No such module "convert".,[5] where a is the semimajor axis and i is the orbital inclination to the line of sight from the Earth. This value provides a lower bound on the true semimajor axis of their orbit.
The visible component is an F-type main-sequence star with a stellar classification of F5 V.[3] It is an estimated 1.5[6] billion years old with 1.3[6] times the mass of the Sun and 1.7[1] times the Sun's radius. It is radiating 5.2[1] times the Sun's luminosity from its photosphere at an effective temperature of 6,732 K.[6]
References
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