VV Corvi

VV Corvi
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 41m 15.9528s[1]
Declination −13° 00′ 50.044″[2]
Apparent magnitude (V) 5.27[2]
Characteristics
Spectral type F5IV[2]
U−B color index +0.10[3]
B−V color index +0.42[3]
Astrometry
Radial velocity (Rv)-19.0[4] km/s
Proper motion (μ) RA: -117.92[1] mas/yr
Dec.: 7.86[1] mas/yr
Parallax (π)11.72 ± 1.90[1] mas
Distanceapprox. 280 ly
(approx. 90 pc)
Other designations
BD -12°3676, HD 110317, HIP 61910, WDS J12413-1301.[2]

VV Corvi (VV Crv) is a close spectroscopic binary in the Corvus constellation. The two stars orbit each other with a period of 1.46 days and an eccentricity of 0.088.[5] The mass ratio of the two stars is 0.775±0.024.[6] A tertiary companion was discovered during the Two Micron All-Sky Survey.[7]

References

  1. ↑ 1.0 1.1 1.2 1.3 Perryman, M. A. C. et al. (1997). "The Hipparcos Catalogue". Astronomy and Astrophysics 323: L49–L52. Bibcode:1997A&A...323L..49P.
  2. ↑ 2.0 2.1 2.2 2.3 "V* VV Crv -- Spectroscopic binary". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-19.
  3. ↑ 3.0 3.1 Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Lab 4 (3), Bibcode:1966CoLPL...4...99J
  4. ↑ Nordström, B.; Andersen, J.; Holmberg, J.; Jørgensen, B. R.; Mayor, M.; Pont, F. (2004). "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs". Publications of the Astronomical Society of Australia 21 (2): 129–133. Bibcode:2004PASA...21..129N. doi:10.1071/AS04013.
  5. ↑ Batten, A. H. (1967). "Sixth catalogue of the orbital elements of spectroscopic binary systems". Publications of the Dominion Astrophysical Observatory, Victoria 13: 119–251. Bibcode:1967PDAO...13..119B.
  6. ↑ Lucy, L. B.; Ricco, E. (March 1979). "The significance of binaries with nearly identical components". Astronomical Journal 84: 401–412. Bibcode:1979AJ.....84..401L. doi:10.1086/112434.
  7. ↑ Tokovinin, A.; Thomas, S.; Sterzik, M.; Udry, S. (2008). "Tertiary companions to close spectroscopic binaries". Multiple Stars Across the H-R Diagram, ESO Astrophysics Symposia. Berlin Heidelberg. p. 129. arXiv:astro-ph/0601518. ISBN 978-3-540-74744-4.