HD 214810

HD 214810
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	22h 40m 47.95600s
Declination	−03° 33′ 15.2789″
Apparent magnitude (V)	6.32 (6.52 + 8.63)
Characteristics
Spectral type	G9 V Fe-0.7
U−B color index	−0.02
B−V color index	+0.52
Astrometry
Radial velocity (Rv)	13.73 km/s
Proper motion (μ)	RA: −7.52 mas/yr ; Dec.: −45.25 mas/yr
Parallax (π)	28.93±0.77 mas
Distance	113 ± 3 ly ; (34.6 ± 0.9 pc)
Absolute magnitude (MV)	+3.63
Orbit
Period (P)	54.57±0.30 yr
Semi-major axis (a)	0.367±0.003″
Eccentricity (e)	0.005±0.003
Inclination (i)	87.5±0.5°
Longitude of the node (Ω)	128.9±0.5°
Periastron epoch (T)	B 1969.38±1.5
Argument of periastron (ω); (secondary)	12.9±20.0°
Details
HD 214810 A
Mass	1.26 M☉
Surface gravity (log g)	4.19 cgs
Temperature	6,151 K
Metallicity [Fe/H]	−0.22 dex
Age	3.7 Gyr
HD 214810 B
Mass	0.87 M☉
Other designations
	BD−04°5728, HD 214810, HIP 111965, HR 8629, SAO 146239
Database references
SIMBAD	data

HD 214810 is a visual binary star in the equatorial constellation of Aquarius. The pair orbit each other with a period of about 54.2 years.^[3]

References

^ ^a ^b 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 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, S2CID 18759600
^ ^a ^b Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C
^ ^a ^b ^c ^d Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992
^ ^a ^b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 21 May 2017.
^ ^a ^b Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740, 87
^ 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

External links

Image HD 214810

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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

[van_Leeuwen2007-2] 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, S2CID 18759600

[Cvetkovic2010-3] Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C

[aj132_1_161-4] Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992

[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

[ORB6-6] "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 21 May 2017.

[aj147_4_87-7] Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740, 87

[cgssn09-8] 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

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Observation data Epoch J2000 Equinox J2000
Constellation	Aquarius^[1]
Right ascension	22^h 40^m 47.95600^s^[2]
Declination	−03° 33′ 15.2789″^[2]
Apparent magnitude (V)	6.32 (6.52 + 8.63)^[3]
Characteristics
Spectral type	G9 V Fe-0.7^[4]
U−B color index	−0.02^[5]
B−V color index	+0.52^[5]
Astrometry

Radial velocity (R_v)	13.73 km/s
Proper motion (μ)	RA: −7.52^[2] mas/yr Dec.: −45.25^[2] mas/yr
Parallax (π)	28.93±0.77 mas^[2]
Distance	113 ± 3 ly (34.6 ± 0.9 pc)
Absolute magnitude (M_V)	+3.63^[1]

Orbit^[6]
Period (P)	54.57±0.30 yr
Semi-major axis (a)	0.367±0.003″
Eccentricity (e)	0.005±0.003
Inclination (i)	87.5±0.5°
Longitude of the node (Ω)	128.9±0.5°
Periastron epoch (T)	B 1969.38±1.5
Argument of periastron (ω) (secondary)	12.9±20.0°
Details
HD 214810 A
Mass	1.26^[7] `M`_☉
Surface gravity (log g)	4.19^[4] cgs
Temperature	6,151^[4] K
Metallicity [Fe/H]	−0.22^[4] dex
Age	3.7^[8] Gyr
HD 214810 B
Mass	0.87^[7] `M`_☉
Other designations
BD−04°5728, HD 214810, HIP 111965, HR 8629, SAO 146239
Database references
SIMBAD	data