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
Distance528 ± 9 ly
(162 ± 3 pc)
Absolute magnitude (MV)−0.01[2]
Details
Mass2.87±0.14[3] M☉
Radius2.7[6] R☉
Luminosity113+32
−25[3] L☉
Temperature9441±108[3] K
Rotational velocity (v sin i)75[3] km/s
Age337[2] Myr
Other designations
10 Boo, BD+22°2650, HD 121996, HIP 68276, HR 5255, SAO 83103[7]
Database references
SIMBADdata

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]

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  3. Zorec, J.; et al. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy and Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789
  4. Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
  5. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  6. Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics (Third ed.), 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
  7. "10 Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 25, 2019.
  8. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  9. Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters, 38 (11): 694–706, arXiv:1606.09028, Bibcode:2012AstL...38..694G, doi:10.1134/S1063773712110035, S2CID 119108982.
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