10 Boötis

10 Boötis is a suspected astrometric binary^[8] star system in the northern constellation of Boötes,^[7] located around 528 light years away from the Sun. It is visible to the naked eye under suitable viewing conditions as a dim, white-hued star with an apparent visual magnitude of 5.76.^[2] Its magnitude is diminished by an extinction of 0.17 due to interstellar dust.^[9] This system is moving away from the Earth with a heliocentric radial velocity of +6 km/s.^[5]

10 Boötis

Observation data Epoch J2000      Equinox J2000
Constellation	Boötes
Right ascension	13h 58m 38.92101s[1]
Declination	+21° 41′ 46.3302″[1]
Apparent magnitude (V)	5.76[2]
Characteristics
Evolutionary stage	main sequence[3]
Spectral type	A0 Vs[4]
B−V color index	−0.002±0.004[2]
Astrometry
Radial velocity (Rv)	+6.1±2.9[5] km/s
Proper motion (μ)	RA: −3.641[1] mas/yr Dec.: −42.535[1] mas/yr
Parallax (π)	6.1741±0.1059 mas
Distance	528 ± 9 ly (162 ± 3 pc)
Absolute magnitude (MV)	−0.01[2]
Details
Mass	2.87±0.14[3] M☉
Radius	2.7[6] R☉
Luminosity	113+32 −25[3] L☉
Temperature	9441±108[3] K
Rotational velocity (v sin i)	75[3] km/s
Age	337[2] Myr
Other designations
10 Boo, BD+22°2650, HD 121996, HIP 68276, HR 5255, SAO 83103[7]
Database references
SIMBAD	data

The visible component is an ordinary A-type main-sequence star with a stellar classification of A0 Vs,^[4] where the 's' notation indicates "sharp" absorption lines. It is 337^[2] million years old with a moderate rotation rate, showing a projected rotational velocity of 75 km/s.^[3] The star has 2.87^[3] times the mass of the Sun and about 2.7^[6] times the Sun's radius. It is radiating 113^[3] times the Sun's luminosity from its photosphere at an effective temperature of 9,441 K.^[3]