Astronomy:HD 210434

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Short description: Star in the constellation Aquarius
HD 210434
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius[1]
Right ascension  22h 10m 33.74708s[2]
Declination −04° 16′ 00.6788″[2]
Apparent magnitude (V) 5.979[3]
Characteristics
Evolutionary stage red giant branch[2]
Spectral type G8/K0III[4]
U−B color index 0.84[5]
B−V color index 0.981[6]
Astrometry
Radial velocity (Rv)−18.1[7] km/s
Proper motion (μ) RA: +70.600[2] mas/yr
Dec.: +3.340[2] mas/yr
Parallax (π)10.3957 ± 0.0439[2] mas
Distance314 ± 1 ly
(96.2 ± 0.4 pc)
Absolute magnitude (MV)1.30[6]
Details
Mass2.5[8] M☉
Radius8.5[9] R☉
Luminosity40[8] L☉
Surface gravity (log g)2.91[2] cgs
Temperature4,910[8] K
Metallicity [Fe/H]0.090±0.090[6][3] dex
Rotational velocity (v sin i)3.3[6] km/s
Age557[2] Myr
Other designations
BD−04°5625, HD 210434, HIP 109466, HR 8453, SAO 145916
Database references
SIMBADdata

HD 210434 is a giant star in the equatorial constellation of Aquarius. According to the Bortle scale, an apparent magnitude of six means this star is faintly visible to the naked eye from dark rural skies. It is an estimated 557 million years old with 2.4 times the mass of the Sun.

References

  1. ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 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 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, doi:10.1051/0004-6361/201014247, Bibcode: 2010A&A...515A.111S 
  4. ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H. 
  5. ↑ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M 
  6. ↑ 6.0 6.1 6.2 6.3 Randich, S. et al. (August 1999), "Lithium in population I subgiants", Astronomy and Astrophysics 348: 487–500, Bibcode: 1999A&A...348..487R 
  7. ↑ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication (Carnegie Institute of Washington D.C.), Bibcode: 1953GCRV..C......0W 
  8. ↑ 8.0 8.1 8.2 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R. et al. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics 633: A34. doi:10.1051/0004-6361/201936360. Bibcode: 2020A&A...633A..34C. 
  9. ↑ Stassun, Keivan G. et al. (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. 




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