HD 125040

HD 125040 is a visual binary star in the northern constellation Boötes. The pair orbit each other with a semi-major axis of 105 astronomical units and a period of roughly 750 years.[8]

HD 125040
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension  14h 16m 32.84326s[1]
Declination +20° 07′ 18.6591″[1]
Apparent magnitude (V) 6.25[2]
Characteristics
Spectral type F8V[3]
B−V color index +0.488[2]
Astrometry
Radial velocity (Rv)−7.20±0.55[4] km/s
Proper motion (μ) RA: −135.85±0.57[1] mas/yr
Dec.: −93.28±0.46[1] mas/yr
Parallax (π)30.65 ± 0.64[1] mas
Distance106 ± 2 ly
(32.6 ± 0.7 pc)
Absolute magnitude (MV)3.69±0.05[5]
Orbit[6]
Period (P)956.6±299.4 yr
Semi-major axis (a)3.75±0.75″
Eccentricity (e)0.53±0.08
Inclination (i)134.3±6.9°
Longitude of the node (Ω)14.1±10.4°
Periastron epoch (T)1683.9±14.2
Argument of periastron (ω)
(secondary)		72.2±18.5°
Details
Temperature6,223[5] K
Metallicity [Fe/H]0.05[5] dex
Age2.5+0.6
−0.7[5] Gyr
Other designations
BD+20° 2954, HD 125040, HIP 69751, HR 5346, SAO 83259, WDS J14165+2007AB[7]
Database references
SIMBADdata

References
  1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. Häggkvist, L.; Oja, T. (1969), "Photoelectric BV photometry of 368 northern stars", Arkiv för Astronomi, 5: 125–135, Bibcode:1969ArA.....5..125H
  3. Harlan, E. A.; Taylor, D. C. (March 1970), "MK classification for F- and G-type stars. II", Astronomical Journal, 75 (2): 165–166, Bibcode:1970AJ.....75..165H, doi:10.1086/110956
  4. Valenti, Jeff A.; Fischer, Debra A. (July 2005). "Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs". The Astrophysical Journal Supplement Series. 159 (1): 141–166. Bibcode:2005ApJS..159..141V. doi:10.1086/430500.
  5. Holmberg, J.; et al. (July 2009). "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics". Astronomy and Astrophysics. 501 (3): 941–947. arXiv:0811.3982. Bibcode:2009A&A...501..941H. doi:10.1051/0004-6361/200811191.
  6. Hartkopf, W. I.; et al. (June 30, 2006), Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, retrieved 2017-06-02.
  7. "HR 5346 -- Star in double system". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2014-10-02.
  8. Mason, Brian D.; et al. (2013). "Speckle Interferometry at the U.S. Naval Observatory. XIX". The Astronomical Journal. 146 (3). 56. Bibcode:2013AJ....146...56M. doi:10.1088/0004-6256/146/3/56.
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