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 | |||
|---|---|---|---|
| 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 | ||
| |||
| 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