S Virginis

S Virginis is a Mira-type variable star in the constellation Virgo. Located approximately 700 parsecs (2,300 ly) distant,[2] it varies between magnitudes 6.3 and 13.2 over a period of approximately 375 days.[4]

Not to be confused with Spica Virginis, Sigma Virginis, or SS Virginis.
S Virginis

The visual band light curve of S Virginis, from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 13h 33m 00.1103s[2]
Declination −07° 11′ 41.0387″[2]
Apparent magnitude (V) 6.68[3]
Characteristics
Spectral type M6-7e[3]
U−B color index 0.91[3]
B−V color index 1.28[3]
Variable type Mira[4]
Astrometry
Radial velocity (Rv)9.60[3] km/s
Proper motion (μ) RA: −16.813±0.680[2] mas/yr
Dec.: 3.010±0.537[2] mas/yr
Parallax (π)1.3709 ± 0.3737 mas[2]
Distanceapprox. 2,400 ly
(approx. 700 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.
Database references
SIMBADdata

References
  1. "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 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.
  3. "S Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 June 2014.
  4. VSX (4 January 2010). "S Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 27 June 2014.


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