R Boötis

R Boötis

Observation data Epoch J2000      Equinox J2000
Constellation	Boötes
Right ascension	14h 37m 11.5787s
Declination	+26° 44′ 11.663″
Apparent magnitude (V)	8.61
Characteristics
Spectral type	M4e
Variable type	Mira variable R Boo
Astrometry
Radial velocity (Rv)	-58 km/s
Proper motion (μ)	RA: -22.61 mas/yr Dec.: 12.50 mas/yr
Parallax (π)	-1.96 ± 1.24 mas
Distance	approx. -2000 ly (approx. -500 pc)
Absolute magnitude (MV)	9.77
Details
Mass	0.4 M☉
Radius	0.5 R☉
Luminosity	0.04 L☉
Temperature	2,000–3,500 K
Other designations
HIP 71490, SAO 83440, BD+27° 2400, HD 128609.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

R Boötis is a variable star in the constellation Boötes.

References

• HIC 71490
• Image R Boötis

Coordinates: 14^h 37^m 11.5787^s, +26° 44′ 11.663″