S Virginis

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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
Distance approx. 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[edit]

  1. ^ a b c d e 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. ^ a b c d e "S Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 June 2014. 
  3. ^ a b VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.