HD 140913

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HD 140913
Observation data
Epoch J2000      Equinox J2000
Constellation Corona Borealis
Right ascension 15h 45m 07.4498s[1]
Declination +28° 28′ 11.748″[1]
Apparent magnitude (V) 6.78[2]
Characteristics
Spectral type G0V[3]
U−B color index +0.09[2]
B−V color index +0.54[2]
Astrometry
Radial velocity (Rv) +37[4] km/s
Proper motion (μ) RA: −87.63[1] mas/yr
Dec.: 38.71[1] mas/yr
Parallax (π) 20.85 ± 1.04[1] mas
Distance 156 ± 8 ly
(48 ± 2 pc)
Details
Temperature 5,861[5] K
Metallicity [Fe/H] = −0.07[5]
Other designations
BD+28 2469, HD 140913, HIP 77152, SAO 83985.[2]

HD 140913 is a star very much like our own Sun located in the constellation Corona Borealis (The Northern Crown) 156 light years away.

The space velocity components of this star are (U, V, W) = (-21.77, -14.42, 1.67).[3]

Companion[edit]

HD 140913 has a companion called HD 140913 B discovered in 1996. A brown dwarf which is 46 times as massive as Jupiter. It orbits about every 148 days. Its orbital eccentricity is 0.61 and its semimajor axis is 0.54 AU.

References[edit]

  1. ^ a b c d e Perryman, M. A. C. et al. (1997), The Hipparcos Catalogue, Astronomy & Astrophysics 323: L49–L52, Bibcode:1997A&A...323L..49P 
  2. ^ a b c d "HD 140913 -- Spectroscopic binary". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-10-06. 
  3. ^ a b Montes, D.; et al. (November 2001). "Late-type members of young stellar kinematic groups - I. Single stars". Monthly Notices of the Royal Astronomical Society 328 (1): 45–63. arXiv:astro-ph/0106537. Bibcode:2001MNRAS.328...45M. doi:10.1046/j.1365-8711.2001.04781.x. 
  4. ^ Evans, D. S. (1967). "The revision of the general catalogue of radial velocities". In Alan Henry Batten and John Frederick Heard. "Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30". University of Toronto: Academic Press. Bibcode:1967IAUS...30...57E. 
  5. ^ a b Holmberg, J.; Nordström, B.; Andersen, J. (July 2009). "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics". Astronomy and Astrophysics, Supplement Series 501 (3): 941–947. arXiv:0811.3982. Bibcode:2009A&A...501..941H. doi:10.1051/0004-6361/200811191.  Note: see VizieR catalogue V/130

See also[edit]