S Virginis

Not to be confused with Spica, also known as Spica Virginis and sometimes abbreviated "S. Virginis".
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
Distanceapprox. 4,000 ly
(approx. 1,000 pc)
Absolute magnitude (MV)3.55
Other designations
S Virginis, BD-06° 3837, HIP 66100, GC 18312, HR 5101, AAVSO 1327-06, GCRV 8027, SAO 139403, HD 117833.

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. 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. 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. 3.0 3.1 VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.