Astronomy:HD 214810
From HandWiki
Short description: Binary star system in the constellation Aquarius
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas |
| 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 |
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]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ 2.0 2.1 Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal 180 (180): 71–80, doi:10.2298/SAJ1080071C, Bibcode: 2010SerAJ.180...71C
- ↑ 3.0 3.1 3.2 3.3 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, doi:10.1086/504637, Bibcode: 2006AJ....132..161G
- ↑ 4.0 4.1 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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. http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6.
- ↑ 6.0 6.1 Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal 147 (4): 14, doi:10.1088/0004-6256/147/4/87, 87, Bibcode: 2014AJ....147...87T
- ↑ 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, doi:10.1051/0004-6361/200811191, Bibcode: 2009A&A...501..941H
External links
| Stars |
| ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
| |||||||||||
| |||||||||||
| Galaxies |
| ||||||||||
| |||||||||||
| |||||||||||
 |  |
