HD 125351

HD 125351
Observation data; Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14h 17m 59.81955s
Declination	+35° 30′ 34.2208″
Apparent magnitude (V)	4.9660±0.0007
Characteristics
Spectral type	K1III
Astrometry
Radial velocity (Rv)	−21.6±0.3 km/s
Proper motion (μ)	RA: 4.87 mas/yr ; Dec.: 14.40 mas/yr
Parallax (π)	13.97 ± 0.39 mas
Distance	233 ± 7 ly ; (72 ± 2 pc)
Orbit
Primary	A Boötis B
Companion	A Boötis B
Period (P)	212.085 days
Semi-major axis (a)	2.3 mas
Eccentricity (e)	0.570
Inclination (i)	83.5°
Longitude of the node (Ω)	195.2°
Periastron epoch (T)	2,440,286.002
Argument of periastron (ω); (secondary)	224.9°
Details
Surface gravity (log g)	2.25 cgs
Temperature	4,650 K
Metallicity [Fe/H]	−0.03 dex
Other designations
	A Boötis, BD+36° 2468, HD 125351, HIP 69879, HR 5361, SAO 64053
Database references
SIMBAD	data

HD 125351 or A Boötis (A Boo) is spectroscopic binary^[6] in the constellation Boötes. The system has an apparent magnitude of +4.97, with a spectrum matching a K-type giant star. It is approximately 233 light-years from Earth.

References[edit]

^ ^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 Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304.
^ Griffin, R. F. (1961), "Photoelectric measurements of the lambda5250A Fe I triplet and the D lines in G and K stars", Monthly Notices of the Royal Astronomical Society, 122: 181, Bibcode:1961MNRAS.122..181G, doi:10.1093/mnras/122.3.181.
^ Ren, Shulin (2013). "Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries". The Astronomical Journal. 145 (3): 81. Bibcode:2013AJ....145...81R. doi:10.1088/0004-6256/145/3/81. S2CID 120199240.
^ ^a ^b ^c Luck, R. Earle; Challener, Sharon L. (December 1995), "Chemical Abundances for Very Strong-Lined Giants", Astronomical Journal, 110: 2968, Bibcode:1995AJ....110.2968L, doi:10.1086/117741.
^ Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv:astro-ph/0211483, Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID 12361870.

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[van_Leeuwen2007-1] 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.

[aa430_165-2] Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304.

[Griffin1961-3] Griffin, R. F. (1961), "Photoelectric measurements of the lambda5250A Fe I triplet and the D lines in G and K stars", Monthly Notices of the Royal Astronomical Society, 122: 181, Bibcode:1961MNRAS.122..181G, doi:10.1093/mnras/122.3.181.

[4] Ren, Shulin (2013). "Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries". The Astronomical Journal. 145 (3): 81. Bibcode:2013AJ....145...81R. doi:10.1088/0004-6256/145/3/81. S2CID 120199240.

[aj110_2968-5] Luck, R. Earle; Challener, Sharon L. (December 1995), "Chemical Abundances for Very Strong-Lined Giants", Astronomical Journal, 110: 2968, Bibcode:1995AJ....110.2968L, doi:10.1086/117741.

[aaa398_1163-6] Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv:astro-ph/0211483, Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID 12361870.

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Observation data Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14^h 17^m 59.81955^s^[1]
Declination	+35° 30′ 34.2208″^[1]
Apparent magnitude (V)	4.9660±0.0007^[2]
Characteristics
Spectral type	K1III^[3]
Astrometry

Radial velocity (R_v)	−21.6±0.3^[2] km/s
Proper motion (μ)	RA: 4.87^[1] mas/yr Dec.: 14.40^[1] mas/yr
Parallax (π)	13.97 ± 0.39 mas^[1]
Distance	233 ± 7 ly (72 ± 2 pc)

Orbit^[4]
Primary	A Boötis B
Companion	A Boötis B
Period (P)	212.085 days
Semi-major axis (a)	2.3 mas
Eccentricity (e)	0.570
Inclination (i)	83.5°
Longitude of the node (Ω)	195.2°
Periastron epoch (T)	2,440,286.002
Argument of periastron (ω) (secondary)	224.9°
Details

Surface gravity (log g)	2.25^[5] cgs
Temperature	4,650^[5] K
Metallicity [Fe/H]	−0.03^[5] dex

Other designations
A Boötis, BD+36° 2468, HD 125351, HIP 69879, HR 5361, SAO 64053
Database references
SIMBAD	data