S Virginis
S Virginis is a Mira-type variable star in the constellation Virgo. Located approximately 700 parsecs (2,300 ly) distant,[1] it varies between magnitudes 6.3 and 13.2 over a period of approximately 375 days.[3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 33m 00.1103s[1] |
| Declination | −07° 11′ 41.0387″[1] |
| Apparent magnitude (V) | 6.68[2] |
| Characteristics | |
| Spectral type | M6-7e[2] |
| U−B color index | 0.91[2] |
| B−V color index | 1.28[2] |
| Variable type | Mira[3] |
| Astrometry | |
| Radial velocity (Rv) | 9.60[2] km/s |
| Proper motion (μ) | RA: −16.813±0.680[1] mas/yr Dec.: 3.010±0.537[1] mas/yr |
| Parallax (π) | 1.3709 ± 0.3737[1] mas |
| Distance | approx. 2,400 ly (approx. 700 pc) |
| Absolute magnitude (MV) | −3.55 |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- "S Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 June 2014.
- VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.
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