S Virginis
- Not to be confused with Spica, also known as Spica Virginis and sometimes abbreviated "S. Virginis".
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 33m 00.109s[1] |
| Declination | −07° 11′ 41.02″[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: -17.84 ± 0.73[1] mas/yr Dec.: 2.67 ± 0.46[1] mas/yr |
| Parallax (π) | 0.90 ± 1.73[1] mas |
| Distance | approx. 4,000 ly (approx. 1,000 pc) |
| Absolute magnitude (MV) | −3.55 |
| Other designations | |
S Virginis is a Mira-type variable star in the constellation Virgo. Located approximately 1,100 parsecs (3,600 ly) distant, it varies between magnitudes 6.3 and 13.2 over a period of approximately 375 days.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ↑ 2.0 2.1 2.2 2.3 2.4 "S Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 June 2014.
- ↑ 3.0 3.1 VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.
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