31 Boötis

31 Boötis

Observation data Epoch J2000      Equinox J2000
Constellation	Boötes
Right ascension	14h 41m 38.7505s
Declination	+08° 09′ 42.350″
Apparent magnitude (V)	4.865
Characteristics
Spectral type	G7+IIIHdel -0.5
U−B color index	0.76
B−V color index	1.0
R−I color index	0.48
Variable type	Variable star
Astrometry
Radial velocity (Rv)	-22.1 km/s
Proper motion (μ)	RA: -10.21 mas/yr Dec.: 3.25 mas/yr
Parallax (π)	5.66 ± 0.82 mas
Distance	approx. 580 ly (approx. 180 pc)
Absolute magnitude (MV)	-1.38
Details
Mass	1,1 M☉
Radius	1,1 R☉
Luminosity	1,2 L☉
Temperature	5,000–6,000 K
Rotation	< 17 km/s 0,008981 Year
Other designations
HR 5480, HD 129312, BD+08°2903, FK5 3163, HIP 71832, SAO 120601, GC 19789.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

31 Boötis is a star in the constellation Boötes.

31 Boötis is a yellow G-type giant with an apparent magnitude of +4.86. It is approximately 576 light years from Earth.

References

• HR 5480
• Image 31 Boötis