G-type star in the constellation Cancer
79 Cancri is a star in the constellation Cancer , located 400 light years from the Sun. It is just visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 6.04. This object is gradually moving slower to the Earth with a heliocentric radial velocity of −3.2 km/s.
This is an aging giant star with a stellar classification of G5 III, which indicates that, at the age of 770 million years, it has exhausted the hydrogen at its core and evolved away from the main sequence . The star has 2.30 times the mass of the Sun and has expanded to 9.4 times the Sun's radius . It is radiating 58 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,076 K.
References
^ Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties" . Astronomy & Astrophysics 616 . A1. arXiv :1804.09365 . Bibcode :2018A&A...616A...1G . doi :10.1051/0004-6361/201833051 .Gaia DR2 record for this source at VizieR .
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331, arXiv :1108.4971 , Bibcode :2012AstL...38..331A , doi :10.1134/S1063773712050015 , S2CID 119257644 .
^ Cowley, A. P.; Bidelman, W. P. (February 1979), "MK spectral types for some F and G stars", Publications of the Astronomical Society of the Pacific , 91 : 83–86, Bibcode :1979PASP...91...83C , doi :10.1086/130446 .
^ Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal , 150 (3), 88, arXiv :1507.01466 , Bibcode :2015AJ....150...88L , doi :10.1088/0004-6256/150/3/88 , S2CID 118505114 .
^ Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal , 785 (2): 12, arXiv :1404.1687 , Bibcode :2014ApJ...785...94L , doi :10.1088/0004-637X/785/2/94 , S2CID 119226316 , 94.
"78 Cnc" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2019-03-11.
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79 Cancri
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