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HD 214810 
Summary
HD 214810 is a visual binary star in the equatorial constellation of Aquarius. The pair orbit each other with a period of about 54.2 years.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 40m 47.95600s[1] |
| Declination | −03° 33′ 15.2789″[1] |
| Apparent magnitude (V) | 6.32 (6.52 + 8.63)[2] |
| Characteristics | |
| Spectral type | G9 V Fe-0.7[3] |
| U−B color index | −0.02[4] |
| B−V color index | +0.52[4] |
| Astrometry | |
| Radial velocity (Rv) | 13.73 km/s |
| Proper motion (μ) | RA: -7.52[1] mas/yr Dec.: -45.25[1] mas/yr |
| Parallax (π) | 28.93 ± 0.77 mas[1] |
| Distance | 113 ± 3 ly (34.6 ± 0.9 pc) |
| Orbit[5] | |
| Period (P) | 54.57 ± 0.30 yr |
| Semi-major axis (a) | 0.367 ± 0.003″ |
| Eccentricity (e) | 0.005 ± 0.003 |
| Inclination (i) | 87.5 ± 0.5° |
| Longitude of the node (Ω) | 128.9 ± 0.5° |
| Periastron epoch (T) | B 1969.38 ± 1.5 |
| Argument of periastron (ω) (secondary) | 12.9 ± 20.0° |
| Details | |
| HD 214810 A | |
| Mass | 1.26[6] M☉ |
| Surface gravity (log g) | 4.19[3] cgs |
| Temperature | 6,151[3] K |
| Metallicity [Fe/H] | −0.22[3] dex |
| Age | 3.7[7] Gyr |
| HD 214810 B | |
| Mass | 0.87[6] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
References edit
- ^ 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, S2CID 18759600
- ^ a b Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C
- ^ a b c d Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992
- ^ a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- ^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 21 May 2017.
- ^ 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:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740, 87
- ^ 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:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511
External links edit
- Image HD 214810