Astronomy:HD 220466

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Short description: Star in the constellation Aquarius
HD 220466
Observation data
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[2] mas
Distance212.4 ± 0.4 ly
(65.1 ± 0.1 pc)
Absolute magnitude (MV)2.50[7]
Details
Mass1.4[8] M☉
Radius2.3[8] R☉
Luminosity8.8[8] L☉
Surface gravity (log g)3.86[8] cgs
Temperature6,580[8] K
Metallicity [Fe/H]−0.18[7] dex
Age2.0[7] Gyr
Other designations
BD−22°6119, HD 220466, HIP 115522, SAO 191873
Database references
SIMBADdata

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

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R  Constellation record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode: 1986EgUBV........0M. 
  4. ↑ 4.0 4.1 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. doi:10.1134/S1063772920100078. Bibcode: 2020ARep...64..756S. 
  5. ↑ 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: 1988mcts.book.....H. 
  6. ↑ 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. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G. 
  7. ↑ 7.0 7.1 7.2 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. doi:10.1051/0004-6361/200811191. Bibcode: 2009A&A...501..941H. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 Stassun, K.G. (October 2019). "The revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  9. ↑ CCDM 23241-2146, database entry, Catalog of Components of Double and Multiple Stars, CDS ID I/211. Accessed on line July 22, 2008.
  10. ↑ 23241-2146, entry, Notes file , Washington Double Star Catalogue. Accessed on line July 22, 2008.
  11. ↑ 11.0 11.1 Tokovinin, Andrei (2018). "The Updated Multiple Star Catalog". The Astrophysical Journal Supplement Series 235: 6. doi:10.3847/1538-4365/aaa1a5. Bibcode: 2018ApJS..235....6T. 



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