HD 200661
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Equuleus |
| Right ascension | 21h 04m 41.64012s[1] |
| Declination | 02° 56′ 32.1839″[1] |
| Apparent magnitude (V) | 6.41 |
| Characteristics | |
| Spectral type | K0III[2] |
| Astrometry | |
| Radial velocity (Rv) | −12.10[3] km/s |
| Proper motion (μ) | RA: 12.63[1] mas/yr Dec.: 5.44[1] mas/yr |
| Parallax (π) | 6.62 ± 0.54 mas[1] |
| Distance | 490 ± 40 ly (150 ± 10 pc) |
| Absolute magnitude (MV) | +1.06[4] |
| Details | |
| Radius | 96[5] R☉ |
| Luminosity | 70[5] L☉ |
| Temperature | 4,926[5] K |
| Metallicity [Fe/H] | −0.21[4] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 200661 is a K-type star in the constellation Equuleus.
References
- ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- ^ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 05: 0. Bibcode:1999MSS...C05....0H.
- ^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.
- ^ a b Bartkevicius, A.; Lazauskaite, R. (1997). "Classification of Population II Stars in the Vilnius Photometric System. II. Results". Baltic Astronomy. 6: 499. Bibcode:1997BaltA...6..499B.
- ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
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