R Virginis

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R Vir
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 12h 38m 29.934s[1]
Declination +06° 59′ 19.03″[1]
Apparent magnitude (V) 7.48[2]
Characteristics
Spectral type M3.5-7e[2]
U−B color index 1.22[2]
B−V color index 1.56[2]
Variable type Mira[3]
Astrometry
Radial velocity (Rv) -26.60[2] km/s
Proper motion (μ) RA: -32.49 ± 0.77[1] mas/yr
Dec.: 4.59 ± 0.87[1] mas/yr
Parallax (π) 1.65 ± 0.85[1] mas
Distance approx. 2,000 ly
(approx. 600 pc)
Absolute magnitude (MV) −1.43
Other designations
R Virginis, GSC 00295-00002, JP11 2255, TYC 295-2-1, AG+07° 1658, HD 109914, UBV 11347, BD+07° 2561, DO 3264, HIP 61667, AAVSO 1233+07, GC 17212, HR 4808, RAFGL 4157, SAO 119509.

R Virginis is a Mira variable in the constellation Virgo. Located approximately 606 parsecs (1,980 ly) distant, it varies between magnitudes 6.1 and 12.1 over a period of approximately 146 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 "R Virginis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 June 2014. 
  3. ^ a b VSX (4 January 2010). "R Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.