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HD 30453
Binary star in the constellation Auriga From Wikipedia, the free encyclopedia
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HD 30453 is a binary star[9] system in the northern constellation of Auriga. It is visible to the naked eye with an apparent visual magnitude of 5.86.[3] The system is located at a distance of approximately 334 light years from the Sun based on parallax.[2] It is drifting further away from the Sun with a radial velocity of 16.65 km/s.[6]
This is a double-lined spectroscopic binary system with an essentially circular orbit and a period of one week.[6] The primary component is a chemically peculiar star of type CP1,[7] or Am star, with a stellar classification of A8m.[4] Abt and Morrell (1995) classed it as Am(A7/F0/F2),[5] indicating it has the hydrogen lines of an A7 star, the calcium K line of a cooler F0 star, and the metallic lines of an F2 class. It has been mentioned as a potential variable star.[10] The star has 3.6[2] times the girth of the Sun and is radiating 38 times the Sun's luminosity from its photosphere at an effective temperature of 7568 K.[2] It has a moderate rotation rate, with a projected rotational velocity of around 16 km/s.[7]
A third component was detected in 1987 using speckle interferometry at an angular separation of 0.04″.[6]
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