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 mas[1] |
| Distance | 106 ± 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 | |
| Temperature | 6,223[5] K |
| Metallicity [Fe/H] | 0.05[5] dex |
| Age | 2.5+0.6 −0.7[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
References
- ^ a b c d e 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
- ^ a b Häggkvist, L.; Oja, T. (1969), "Photoelectric BV photometry of 368 northern stars", Arkiv för Astronomi, 5: 125–135, Bibcode:1969ArA.....5..125H
- ^ 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
- ^ 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.
- ^ a b c d 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.
- ^ Hartkopf, W. I.; et al. (June 30, 2006), Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, retrieved 2017-06-02.
- ^ "HR 5346 -- Star in double system". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2014-10-02.
- ^ 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.
External links
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