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(Redirected from Zeta Vol)
Binary star in the constellation Volans
Zeta Volantis, Latinized from ζ Volantis, is a binary star system in the southernconstellation of Volans. It has an apparent visual magnitude of 3.92, which is bright enough to be seen with the naked eye. Based upon parallax measurements by the Gaia spacecraft, it is approximately 145 light-years (44.6 parsecs) from the Sun. The companion is a magnitude 9.7 star at an angular separation of 16.7″. Based upon their motion through space, this system made its perihelion passage some 858,000 years ago when it came within 22 ly (6.6 pc) of the Sun. It is currently moving away with a radial velocity of 48 km/s.
The primary component is K-typegiant star with a stellar classification of K0 III. It has a derived luminosity of around 60 times that of the Sun, 1.2 times the Sun's mass and is about 5.1 billion years old. At this age, it has expanded to 10.7 times the Sun's size. The expanded outer envelope has an effective temperature of 4,788 K, giving it the orange glow of a K-type star.
^ Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
"The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on 2013-12-03, retrieved 2012-01-16.
Location of ζ Volantis
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