RY Sagittarii
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| Observation data Epoch J2000.0 ICRS Equinox J2000.0 ICRS | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 16m 33.77s[1] |
| Declination | −33° 31′ 20.4″[1] |
| Apparent magnitude (V) | 6.58 |
| Characteristics | |
| Spectral type | G0Iaep |
| Variable type | R CrB variable |
| Astrometry | |
| Radial velocity (Rv) | -23[2] km/s |
| Proper motion (μ) | RA: 10.33[2] mas/yr Dec.: -0.41[2] mas/yr |
| Parallax (π) | 1.29[3] mas |
| Distance | 9049[2] ly |
| Absolute magnitude (MV) | -5.64[2] |
| Details | |
| Radius | 60 R☉ |
| Other designations | |
HIP94730, HD180093, HR7296, SAO211117 | |
RY Sagittarii is a G type supergiant and a R Coronae Borealis type variable star in the constellation Sagittarius, 9049 light years away from us. The star is also a helium star.[4]
See also
References
- ↑ 1.0 1.1 "V RY Sgr", The International Variable Star Index, retrieved 2013-08-08
- ↑ 2.0 2.1 2.2 2.3 2.4 "HIP 94730", Wolfram Alpha, retrieved 2013-08-08
- ↑ "V*RY Sgr", SIMBAD Astronomical Database(Centre de donées astronomiques de Strasbourg), retrieved 2013-08-08
- ↑ I. J., Danziger (August 2013), "A high-disperson spectral study of RY Sagittarii", Monthly Notices of the Royal Astronomical Society 130: 199, Bibcode:1965MNRAS.130..199D.
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