R Boötis

R Boötis is a Mira variable in the constellation Boötes. It ranges between magnitudes 6.2 and 13.1 over a period of approximately 223 days.[2]

R Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 37m 11.5766s[1]
Declination 26° 44 11.681[1]
Apparent magnitude (V) 6.20[1]
Characteristics
Spectral type M4-8e[1]
B−V color index 3.57[1]
Variable type Mira variable[2]
Astrometry
Radial velocity (Rv)-58.00[1] km/s
Proper motion (μ) RA: -25.59[1] mas/yr
Dec.: 14.36[1] mas/yr
Parallax (π)-1.34 ± 1.49[1] mas
Other designations
HIP 71490, SAO 83440, BD+27° 2400, HD 128609.
Database references
SIMBADdata

References

  1. "R Canum Venaticorum". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 26 June 2014.
  2. VSX (4 January 2010). "R Boötis". AAVSO Website. American Association of Variable Star Observers. Retrieved 26 June 2014.


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