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HD 106760

Binary star in the constellation Coma Berenices

Summary

Binary star in the constellation Coma Berenices

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HD 106760 is a single-lined spectroscopic binary star system in the northern constellation of Coma Berenices. It is faintly visible to the naked eye, having an apparent visual magnitude of 4.99. The system is located around 318 light years away, as determined from its annual parallax shift of . It is moving closer with a heliocentric radial velocity of −40 km/s, and is expected to come as close as 79.31 pc in about 772,000 years.

The variable radial velocity of HD 106760 was announced by W. W. Campbell of Lick Observatory in 1922, indicating the binary nature of this system. A preliminary orbit was determined by Mount Wilson Observatory astronomer W. H. Christie in 1936, then refined by English astronomer R. F. Griffin in 1984. The components of this system orbit each other with a period of 3.6 years and an eccentricity of 0.43.

The visible component has a stellar classification of K0.5 III–IIIb, indicating it is an evolved K-type giant star. It is around 1.6 billion years old with 1.9 times the mass of the Sun and has expanded to 17 times the Sun's radius. The star is radiating 112 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,581 K.

References

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References

  1. "HD 106760".
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k-type-giants spectroscopic-binaries coma-berenices durchmusterung-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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