Beta Coronae Australis
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Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
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Constellation | Corona Australis |
Right ascension | 19h 10m 01.7569s[1] |
Declination | −39° 20′ 26.866″[1] |
Apparent magnitude (V) | 4.117[1] |
Characteristics | |
Spectral type | K0II[1] |
U−B color index | +1.07[2] |
B−V color index | +1.20[2] |
R−I color index | +0.61[2] |
Astrometry | |
Radial velocity (Rv) | 2.7 ± 0.9[1] km/s |
Proper motion (μ) | RA: 5.89[1] mas/yr Dec.: −36.78[1] mas/yr |
Parallax (π) | 6.42 ± 0.90[1] mas |
Distance | approx. 510 ly (approx. 160 pc) |
Absolute magnitude (MV) | −1.8[3] |
Other designations | |
Database references | |
SIMBAD | data |
Beta Coronae Australis (Beta CrA, β Coronae Australis, β CrA) is a K-type bright giant star in the constellation of Corona Australis.[1] It has an apparent visual magnitude of approximately 4.117.[1] Located around 500 light-years distant, it shines with a luminosity approximately 620 times that of the Sun and has a surface temperature of 4771 K.[4]
References
- 1 2 3 4 5 6 7 8 9 10 11 * bet CrA -- Star, database entry, SIMBAD. Accessed on line September 5, 2008.
- 1 2 3 HR 7259, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 5, 2008.
- ↑ From apparent magnitude and parallax.
- ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037
. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
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