R Corvi

R Corvi

The visual band light curve of R Corvi, from AAVSO data
Observation data
Epoch J2000      Equinox ICRS
Constellation Corvus
Right ascension 12h 19m 37.8707s
Declination −19° 15′ 21.862″
Apparent magnitude (V) 6.7 to 14.4
Characteristics
Evolutionary stage AGB
Spectral type M4.5e-M9e
U−B color index +0.16
B−V color index +1.53
Variable type Mira
Astrometry
Radial velocity (Rv)−22.00 km/s
Proper motion (μ) RA: −4.247 mas/yr
Dec.: −8.663 mas/yr
Parallax (π)1.2136±0.0718 mas
Distance2,700 ± 200 ly
(820 ± 50 pc)
Details
Mass3.4 M☉
Surface gravity (log g)1.59 cgs
Temperature3,857 K
Metallicity [Fe/H]−0.38 dex
Other designations
R Cvr, BD−18°3367, HD 107199, HIP 60106, SAO 157211
Database references
SIMBADdata

R Corvi (R Crv) is a Mira variable star in the constellation Corvus, which ranges from a magnitude of 6.7 to 14.4 with a period of approximately 317 days. In the sky it appears close to Gamma Corvi and can be seen in the same binocular field. Extrapolating its luminosity from its period of 317 days yields a distance of 810 parsecs.

Franciszek Karliński discovered that the star's brightness varies, in 1867.

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 3 4 5 VSX (4 January 2010). "R Corvi". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
  3. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. 1 2 Whitelock, Patricia A.; Feast, Michael W.; Van Leeuwen, Floor (2008). "AGB variables and the Mira period-luminosity relation". Monthly Notices of the Royal Astronomical Society. 386 (1): 313. arXiv:0801.4465. Bibcode:2008MNRAS.386..313W. doi:10.1111/j.1365-2966.2008.13032.x.
  5. 1 2 Myers, J. R.; Sande, C. B.; Miller, A. C.; Warren, W. H., Jr.; Tracewell, D. A. (2015). "VizieR Online Data Catalog: SKY2000 Master Catalog, Version 5 (Myers+ 2006)". Vizier Online Data Catalog. Bibcode:2015yCat.5145....0M.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  7. 1 2 3 4 Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv:2407.06963. Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
  8. ↑ "R Crv". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 June 2014.
  9. ↑ Garfinkle, Robert A. (1997), Star-Hopping: Your Visa to Viewing the Universe, Cambridge University Press, p. 108, ISBN 0-521-59889-3
  10. ↑ Cannon, Annie J. (1907). "Second catalogue of variable stars". Annals of Harvard College Observatory. 55: 1–94.