HD 214810
| 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[1] mas |
| Distance | 113 ± 3 ly (34.6 ± 0.9 pc) |
| Orbit[2] | |
| Period (P) | 54.20 yr |
| Semi-major axis (a) | 0.360" |
| Details | |
| HD 214810 A | |
| Mass | 1.26[5] M☉ |
| Surface gravity (log g) | 4.19[3] cgs |
| Temperature | 6,151[3] K |
| Metallicity [Fe/H] | −0.22[3] dex |
| Age | 3.7[6] Gyr |
| HD 214810 B | |
| Mass | 0.87[5] 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 2 3 4 5 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
- 1 2 3 Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal 180: 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C
- 1 2 3 4 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
- 1 2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M
- 1 2 Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal 147 (4): 14, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, 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
External links
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Tuesday, July 14, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.