HD 176051

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Template:Short description

HD 176051
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.20[1]
Characteristics
Spectral type G0 V + K1 V[3]
U−B Template:Engvar +0.029[4]
B−V Template:Engvar +0.570[4]
Astrometry
Radial velocity (Rv)−47.2[5] km/s
Proper motion (μ) RA: +201.96[2] mas/yr
Dec.: −145.46[2] mas/yr
Parallax (π)67.24±0.37 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)4.34[1]
Orbit[6]
Period (P)22,423 d
Semi-major axis (a)19.1 AU[7]
Eccentricity (e)0.25 (0.27[7] or 0.54[8])
Argument of periastron (ω)
(secondary)		102°
Semi-amplitude (K1)
(primary)		3.51 km/s
Semi-amplitude (K2)
(secondary)		0.74 km/s
Details
HD 176051 A
Mass1.07[3] Template:Solar mass
Radius1.06[9] Template:Solar radius
Luminosity1.65[1] Template:Solar luminosity
Surface gravity (log g)4.60[10] cgs
Temperature6,000[10] K
Metallicity [Fe/H]−0.11[10] dex
Age8.1[11] Gyr
HD 176051 B
Mass0.71[3] Template:Solar mass
Radius0.81[9] Template:Solar radius
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
ADS 11871, HR 7162, BD+32°3267, GJ 738, HD 176051, LTT 15567, SAO 67612, HIP 93017[12]
Database references
SIMBADAB
A
B
Exoplanet Archivedata
ARICNSdata
data2
Extrasolar Planets
Encyclopaedia		data

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HD 176051 is a spectroscopic binary star system[12] approximately 49 light years away from Earth in the constellation Lyra. The pair orbit with a period of 22,423 days (61.4 years) and an eccentricity of 0.25.[6] Compared to the Sun, they have a somewhat lower proportion of elements more massive than helium.[10] Their individual masses are estimated at 1.07 and 0.71 solar masses (Template:Solar mass).[3] The system is moving closer to the Sun with a radial velocity of −47[5] km/s and will reach perihelion in about 269,000 years when it comes within roughly Script error: No such module "convert". of the Sun.[13]

Planetary system

A planet orbiting one of the stars was discovered through astrometric observations. However, it is not known which stellar component the planet is orbiting around.

Template:OrbitboxPlanet begin Template:OrbitboxPlanet

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The planet parameters are given here for the Template:Solar mass component B.[7] But, if instead the planet is orbiting the Template:Solar mass component A, its mass is 2.26 Template:Jupiter mass with a semimajor axis of 2.02 AU.[14]

See also

References

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  5. ↑ a b Script error: No such module "Citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".VizierR (obsoleted)
  7. ↑ a b c Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "Citation/CS1".
  9. ↑ a b Script error: No such module "Citation/CS1"."VizieR−GJ 738A/738B"
  10. ↑ a b c d Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ a b Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".

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External links

Template:Stars of Lyra

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