Southern Crown Beta ( Beta CrA , β Coronae Australis , β CrA ) is a star in the constellation of Southern Crown . The apparent magnitude 4.117 (visible to the naked eye). This star has a spectral class K, an orange bright giant .
Beta Southern Crown | |||
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Star | |||
Β CrA location in the constellation | |||
Observational data ( Epoch J2000.0 ) | |||
Right ascension | |||
Declination | |||
Distance | 508 sv. years old | ||
Visible magnitude ( V ) | 4.117 | ||
Constellation | South Crown | ||
Astrometry | |||
Radial velocity ( R v ) | 2.7 ± 0.9 km / s | ||
Proper motion (μ) | RA: 4.37 ± 0.36 mas per year Dec: -36.65 ± 0.21 mas per year | ||
Parallax (π) | 6.88 ± 0.25 mas | ||
Absolute magnitude (V) | −1.8 | ||
Specifications | |||
Spectral class | K0II | ||
Color Indicator ( B - V ) | +1.20 [1] | ||
Color Index ( U - B ) | +1.07 [1] | ||
physical characteristics | |||
Weight | 4.5 - 5 M ☉ | ||
Radius | 43 R ☉ | ||
Temperature | 4570 K | ||
Luminosity | 730 L ☉ | ||
Rotation | +2.7 km / s | ||
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Information in databases | |||
SIMBAD | data | ||
It is located at a distance of 155.7 parsecs from the Sun [2] .
Notes
- 2 1 2 HR 7259 , The Bright Star Catalog, 5th Revised Ed. (Preliminary Version), D. Hoffleit and WH Warren, Jr., CDS ID V / 50 . Accessed on line September 5, 2008.
- ↑ β CrA on WIKISKY.ORG
Links
- Beta Southern Crown on WikiSky : DSS2 , SDSS , GALEX , IRAS , H α , X-ray , astrophoto , sky map , articles and images