HD 220466
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h 24m 03.97947s[1] |
| Declination | −21° 46′ 27.8819″[1] |
| Apparent magnitude (V) | 6.50[2] |
| Characteristics | |
| Spectral type | F3IV/V[3] |
| U−B color index | −0.03[2] |
| B−V color index | +0.42[2] |
| Astrometry | |
| Radial velocity (Rv) | 24.5[4] km/s |
| Proper motion (μ) | RA: −67.70[1] mas/yr Dec.: −77.45[1] mas/yr |
| Parallax (π) | 15.99 ± 0.72[1] mas |
| Distance | 204 ± 9 ly (63 ± 3 pc) |
| Absolute magnitude (MV) | 2.50[5] |
| Details | |
| Mass | 1.47 (1.41 to 1.52)[6] M☉ |
| Temperature | 6,456[5] K |
| Metallicity [Fe/H] | −0.18[5] dex |
| Age | 2.0[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 220466 is a F-type subgiant or main sequence star in the constellation Aquarius. It has apparent magnitude 6.47 and is about 200 light-years away.[1] In 1913, an apparent visual companion of apparent magnitude 10.3 was observed 1.9 arcseconds away from the star,[7] but it is doubtful whether it actually exists.[8]
References
- 1 2 3 4 5 6 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- 1 2 3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M
- ↑ Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988MSS...C04....0H
- ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 3 4 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
- ↑ HD 220466, database entry, The Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line November 19, 2008.
- ↑ CCDM 23241-2146, database entry, Catalog of Components of Double and Multiple Stars, CDS ID I/211. Accessed on line July 22, 2008.
- ↑ 23241-2146, entry, Notes file, Washington Double Star Catalogue. Accessed on line July 22, 2008.
External links
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