Epoch J2000.0 Equinox J2000.0
|Right ascension||06h 51m 26.98552s|
|Declination||−70° 57′ 48.2766″|
|Apparent magnitude (V)||5.39|
|Spectral type||B7 III|
|U−B color index||−0.37|
|B−V color index||−0.12|
|Radial velocity (Rv)||18.5 km/s|
|Proper motion (μ)||RA: +3.64 mas/yr
Dec.: +26.08 mas/yr
|Parallax (π)||5.79 ± 0.19 mas|
|Distance||560 ± 20 ly
(173 ± 6 pc)
|Rotational velocity (v sin i)||129 km/s|
Iota Volantis (ι Vol, ι Volantis) is the Bayer designation for a star in the southern constellation of Volans. It has an apparent visual magnitude of 5.39, which indicates it is faintly visible to the naked eye. With a parallax of 0.00579″, it lies at an estimated distance of roughly 560 light years from the Sun.
This star has a stellar classification of B7 III, which means it is a B-type giant star. However, some sources give it a classification of B7 IV, which would indicate it is a subgiant star. It has 3.7 times the mass of the Sun and is spinning rapidly with a projected rotational velocity of 129 km/s. The estimated size of the star is 4.7 times the radius of the Sun, and it shines with around 313 times the Sun's luminosity. The effective temperature of the star's outer atmosphere is 11,803 K, giving it the blue-white hue of a B-type star.
- van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: , Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
- Cousins, A. W. J.; Stoy, R. H. (1962), "Photoelectric magnitudes and colours of Southern stars", Royal Observatory Bulletin, 64, Bibcode:1962RGOB...64..103C.
- Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
- Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick, eds., "The Revision of the General Catalogue of Radial Velocities", Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
- Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv: , Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691.
- Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367: 521–524, arXiv: , Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
- "iot Vol -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2016-09-05.
- "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, retrieved 2012-01-16.
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