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 |
Absolute magnitude (MV) | −3.55 |
Other designations | |
Database references | |
SIMBAD | data |
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 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. Vizier catalog entry
- 1 2 3 4 5 "S Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 June 2014.
- 1 2 VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.
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