R Coronae Australis
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Corona Australis |
| Right ascension | 19h 01m 53.6503s |
| Declination | −36° 57′ 07.87″ |
| Apparent magnitude (V) | +11.91 |
| Characteristics | |
| Spectral type | B5IIIpe |
| Variable type | INSA |
| Astrometry | |
| Radial velocity (Rv) | -36.0 ± 4.9 km/s |
| Proper motion (μ) |
RA: -28.30 mas/yr Dec.: 20.57 mas/yr |
| Parallax (π) | 40.93 ± 27.95mas |
| Distance | approx. 80 ly (approx. 20 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Coronae Australis (R CrA) is a variable star in the constellation Corona Australis. It has varied between magnitudes 10 and 14.36. A small reflection/emission nebula NGC 6729 extends from the star towards SE.
This star is moving toward the Solar System with a radial velocity of 36 km s−1. In roughly 222,000 years, this system may approach within 1.77 light-years (0.54 parsecs) of the Sun. However, this estimate has a considerable margin of error, so the actual distance remains uncertain.
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