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