HD 210434

HD 210434
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	22h 10m 33.74708s
Declination	−04° 16′ 00.6788″
Apparent magnitude (V)	5.979
Characteristics
Evolutionary stage	red giant branch
Spectral type	G8/K0III
U−B color index	0.84
B−V color index	0.981
Astrometry
Radial velocity (Rv)	−18.1 km/s
Proper motion (μ)	RA: +70.600 mas/yr ; Dec.: +3.340 mas/yr
Parallax (π)	10.3957±0.0439 mas
Distance	314 ± 1 ly ; (96.2 ± 0.4 pc)
Absolute magnitude (MV)	1.30
Details
Mass	2.5 M☉
Radius	8.5 R☉
Luminosity	40 L☉
Surface gravity (log g)	2.91 cgs
Temperature	4,910 K
Metallicity [Fe/H]	0.090±0.090 dex
Rotational velocity (v sin i)	3.3 km/s
Age	557 Myr
Other designations
	BD−04°5625, HD 210434, HIP 109466, HR 8453, SAO 145916
Database references
SIMBAD	data

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

^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
^ ^a ^b ^c ^d ^e ^f ^g ^h 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 Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423
^ 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.
^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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 ^c ^d Randich, S.; et al. (August 1999), "Lithium in population I subgiants", Astronomy and Astrophysics, 348: 487–500, Bibcode:1999A&A...348..487R
^ 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
^ ^a ^b ^c Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics. 633: A34. arXiv:1910.12732. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360.
^ Stassun, Keivan G.; et al. (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.

External links

Image HD 210434

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[xhip-1] Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.

[dr3-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h 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.

[aaa515_A11-3] Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423

[mk-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.

[MERMILLIOD-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

[aaa348_487-6] Randich, S.; et al. (August 1999), "Lithium in population I subgiants", Astronomy and Astrophysics, 348: 487–500, Bibcode:1999A&A...348..487R

[gcsrv-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

[charbonnel2020-8] Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics. 633: A34. arXiv:1910.12732. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360.

[tic-9] Stassun, Keivan G.; et al. (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.

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Observation data Epoch J2000 Equinox J2000
Constellation	Aquarius^[1]
Right ascension	22^h 10^m 33.74708^s^[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 (R_v)	−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 mas^[2]
Distance	314 ± 1 ly (96.2 ± 0.4 pc)
Absolute magnitude (M_V)	1.30^[6]

Details

Mass	2.5^[8] `M`_☉
Radius	8.5^[9] `R`_☉
Luminosity	40^[8] `L`_☉
Surface gravity (log g)	2.91^[2] cgs
Temperature	4,910^[8] K
Metallicity [Fe/H]	0.090±0.090^[6]^[3] dex
Rotational velocity (v sin i)	3.3^[6] km/s
Age	557^[2] Myr

Other designations
BD−04°5625, HD 210434, HIP 109466, HR 8453, SAO 145916
Database references
SIMBAD	data