HD 220466

HD 220466

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Aquarius
Right ascension	23^h 24^m 03.97947^s[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
BD−22°6119, HD 220466, HIP 115522, SAO 191873.
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. 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.
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 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data.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
3. 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
4. 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.
5. 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
6. 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.
7. CCDM 23241-2146, database entry, Catalog of Components of Double and Multiple Stars, CDS ID I/211. Accessed on line July 22, 2008.
8. 23241-2146, entry, Notes file, Washington Double Star Catalogue. Accessed on line July 22, 2008.

External links

• Image HD 220466