R Corvi
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Corvus |
| Right ascension | 12h 19m 37.8727s[1] |
| Declination | −19° 15′ 21.877″[1] |
| Apparent magnitude (V) | 6.70[1] |
| Characteristics | |
| Spectral type | M4.5-9:e[1] |
| B−V color index | 3.70[1] |
| Variable type | Mira[2] |
| Astrometry | |
| Radial velocity (Rv) | -22.00[1] km/s |
| Proper motion (μ) | RA: -1.20[1] mas/yr Dec.: -10.03[1] mas/yr |
| Distance | 810 pc |
| Other designations | |
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.[2] In the sky it appears close to Gamma Corvi and can be seen in the same binocular field.[3] Extrapolating its luminosity from its period of 317 days yields a distance of 810 parsecs.[4]
References
- 1 2 3 4 5 6 7 8 "R Corvi". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 June 2014.
- 1 2 VSX (4 January 2010). "R Corvi". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
- ↑ Garfinkle, Robert A. (1997), Star-Hopping: Your Visa to Viewing the Universe, Cambridge University Press, p. 108, ISBN 0-521-59889-3
- ↑ 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): 313–23. arXiv:0801.4465
. Bibcode:2008MNRAS.386..313W. doi:10.1111/j.1365-2966.2008.13032.x.
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