HD 220466
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aquarius[1] |
| Right ascension | 23h 24m 03.97937s[2] |
| Declination | −21° 46′ 27.8824″[2] |
| Apparent magnitude (V) | 6.50[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4][2] |
| Spectral type | F3IV/V[5] |
| U−B color index | −0.03[3] |
| B−V color index | +0.42[3] |
| Astrometry | |
| Radial velocity (Rv) | 24.5[6] km/s |
| Proper motion (μ) | RA: −68.050[2] mas/yr Dec.: −77.697[2] mas/yr |
| Parallax (π) | 15.3570±0.0292 mas[2] |
| Distance | 212.4 ± 0.4 ly (65.1 ± 0.1 pc) |
| Absolute magnitude (MV) | 2.50[7] |
| Details | |
| Mass | 1.4[8] M☉ |
| Radius | 2.3[8] R☉ |
| Luminosity | 8.8[8] L☉ |
| Surface gravity (log g) | 3.86[8] cgs |
| Temperature | 6,580[8] K |
| Metallicity [Fe/H] | −0.18[7] dex |
| Age | 2.0[7] Gyr |
| Other designations | |
| BD−22°6119, HD 220466, HIP 115522, SAO 191873 | |
| Database references | |
| SIMBAD | data |
HD 220466 is an F-type main sequence star in the constellation Aquarius. It has apparent magnitude 6.5 and is about 212 light-years away.
In 1913, an apparent visual companion of apparent magnitude 10.3 was observed 1.9 arcseconds away from the star,[9] but it is doubtful whether it exists.[10]
The 17th-magnitude red dwarf UCAC4 342-200228 18″ away from HD 220466 forms a common proper motion pairing.[4][11] Any orbit would take tens of thousands of years.[11]
References
[edit]- ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode:1986EgUBV........0M.
- ^ a b Sapozhnikov, S. A.; Kovaleva, D. A.; Malkov, O. Yu.; Sytov, A. Yu. (2020). "Binary Star Population with Common Proper Motion in Gaia DR2". Astronomy Reports. 64 (9): 756–768. arXiv:2012.06115. Bibcode:2020ARep...64..756S. doi:10.1134/S1063772920100078.
- ^ Houk, Nancy; Smith-Moore, M. (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 4. Ann Arbor: Dept. of Astronomy, University of Michigan. Bibcode:1988mcts.book.....H.
- ^ 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ a b c 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. S2CID 118577511.
- ^ a b c d e Stassun, K.G.; et al. (October 2019). "The revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. S2CID 166227927.
- ^ 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 Archived 2008-04-13 at the Wayback Machine, Washington Double Star Catalogue. Accessed on line July 22, 2008.
- ^ a b Tokovinin, Andrei (2018). "The Updated Multiple Star Catalog". The Astrophysical Journal Supplement Series. 235: 6. arXiv:1712.04750. Bibcode:2018ApJS..235....6T. doi:10.3847/1538-4365/aaa1a5.
