10 Boötis
Star in the constellation Boötes
From Wikipedia, the free encyclopedia
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]
| 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]