HD 167042

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Template:Short description

HD 167042
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Draco
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) +5.97[2]
Characteristics
Evolutionary stage subgiant[3]
Spectral type K1 III[4] or K1 IV[2]
U−B Template:Engvar +0.716[5]
B−V Template:Engvar +0.934[5]
Astrometry
Radial velocity (Rv)−17.88[6] km/s
Proper motion (μ) RA: +107.630 mas/yr[1]
Dec.: +247.345 mas/yr[1]
Parallax (π)20.1313±0.0293 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)2.48[3]
Details[7]
MassScript error: No such module "val". Template:Solar mass
RadiusScript error: No such module "val". Template:Solar radius
LuminosityScript error: No such module "val". Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val". cgs
TemperatureScript error: No such module "val". K
Metallicity [Fe/H]+Script error: No such module "val". dex
Rotational velocity (v sin i)0.68[6] km/s
AgeScript error: No such module "val". Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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HD 167042 is a star with an orbiting exoplanet in the northern constellation of Draco. With an apparent visual magnitude of +5.97,[2] the star is dimly visible to the naked eye. It is located at a distance of 162 light years based on parallax measurements,[1] but it is drifting closer with a radial velocity of −18 km/s.[6] HD 167042 has a relatively large proper motion, traversing the celestial sphere at an angular rate of Script error: No such module "val". yr−1.[9]

The spectrum of HD 167042 presents as an evolved K-type giant star, an orange giant, with a stellar classification of K1 III.[4] However, the position of this star on the H-R diagram suggests it is still a subgiant star. When this star was a main sequence, it was white-hued mid to late A-type star based on its mass. It shows no significant magnetic activity in its chromosphere.[3] The star has 1.88 times the mass of the Sun and has expanded to 4.49 times the Sun's radius. It is radiating 10.7 times the luminosity of the Sun from its photosphere at an effective temperature of 4,926 K.[7]

Planetary system

On 28 November 2007, a preprint of the discovery of the exoplanet HD 167042 b was posted to the arXiv server. The peer reviewed paper was then published in The Astrophysical Journal on 1 March 2008.[3] The discovery was later independently confirmed.[10]

Template:OrbitboxPlanet begin Template:OrbitboxPlanet

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See also

References

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  1. ↑ a b c d e Template:Cite Gaia DR3
  2. ↑ a b c Script error: No such module "citation/CS1".
  3. ↑ a b c d Script error: No such module "Citation/CS1".
  4. ↑ a b Script error: No such module "Citation/CS1".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b c Script error: No such module "citation/CS1".
  7. ↑ a b Script error: No such module "Citation/CS1".
  8. ↑ Template:Cite simbad
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".

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External links

  • Script error: No such module "citation/CS1".

Template:Sky Template:Stars of Draco

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