HD 131473

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HD 131473
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 53m 23.34844s[1]
Declination +15° 42′ 18.602″[1]
Apparent magnitude (V) 6.403[2]
Characteristics
Spectral type F9V[3]
U−B color index +0.122[2]
B−V color index +0.570[2]
Astrometry
Radial velocity (Rv) 20.8[4] km/s
Proper motion (μ) RA: −22.72[1] mas/yr
Dec.: +21.58[1] mas/yr
Parallax (π) 20.99 ± 0.93[1] mas
Distance 155 ± 7 ly
(48 ± 2 pc)
Absolute magnitude (MV) 2.98[5]
Details
HD 131473 A
Mass 1.34[6] M
Luminosity 5.1[7] L
Temperature 5,870[7] K
Metallicity [Fe/H] 0.19[5] dex
Age 2.5[5] Gyr
HD 131473 B
Mass 1.19[6] M
Orbit[8]
Period (P) 313 yr
Semi-major axis (a) 1.358"
Eccentricity (e) 0.50
Inclination (i) 108.5°
Longitude of the node (Ω) 12.5°
Periastron epoch (T) 1824.0
Argument of periastron (ω)
(secondary)
49°
Other designations
BD+16° 2705, HD 131473, HIP 72846, HR 5550, SAO 101273.
Database references
SIMBAD data

HD 131473 is a binary star system in the northern constellation of Boötes. The primary is an F-type main sequence star with a stellar classification of F9V.[3]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Rakos, K. D.; et al. (February 1982), "Photometric and astrometric observations of close visual binaries", Astronomy and Astrophysics Supplement Series, 47: 221–235, Bibcode:1982A&AS...47..221R. 
  3. ^ a b Gorlova, N. I.; et al. (August 2003), "Gravity Indicators in the Near-Infrared Spectra of Brown Dwarfs", The Astrophysical Journal, 593 (2): 1074−1092, arXiv:astro-ph/0305147Freely accessible, Bibcode:2003ApJ...593.1074G, doi:10.1086/376730. 
  4. ^ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington D.C., Bibcode:1953GCRV..C......0W. 
  5. ^ a b c 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, 501 (3): 941–947, arXiv:0811.3982Freely accessible, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191. 
  6. ^ a b Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827Freely accessible, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, 87. 
  7. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037Freely accessible, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x. 
  8. ^ Heintz, W. D. (July 1998), "Observations of Double Stars. XVIII.", The Astrophysical Journal Supplement Series, 117 (2): 587−598, Bibcode:1998ApJS..117..587H, doi:10.1086/313127. 

External links[edit]