HD 167042 b

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 167042 b
Exoplanet List of exoplanets
Parent star
Star HD 167042
Constellation Draco
Right ascension (α) 18h 10m 31.6403s
Declination (δ) +54° 17′ 11.588″
Apparent magnitude (mV) 5.97
Distance 163 ly
(50 pc)
Spectral type K1III
Orbital elements
Semi-major axis (a) 1.30 AU
Periastron (q) 1.26 AU
Apastron (Q) 1.34 AU
Eccentricity (e) 0.027±0.04
Orbital period (P) 412.6±4 d
(1.130 y)
Orbital speed (υ) 34.4 km/s
Argument of
(ω) 34±40°
Time of periastron (T0) 2453330±120 JD
Semi-amplitude (K) 29.7 m/s
Physical characteristics
Minimum mass (m sin i) 1.7 MJ
Discovery information
Discovery date Sept 20, 2007
published Oct 22, 2007
Discoverer(s) Johnson "et al."
Discovery method radial velocity
Discovery site Lick Observatory
Discovery status Published
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 167042 b is a gas giant extrasolar planet located approximately 163 light-years away in the constellation of Draco, orbiting the star HD 167042. The mass 1.7 MJ is only minimum since the inclination of the orbital plane is unknown. As it is typical for most known extrasolar planets, it orbits less than 3 AU from the parent star, hence taking less than 2,000 days (5.5 years) to revolve. For this planet, it orbits at 1.30 AU and taking 413 days to revolve around the star. Unlike most exoplanets, the eccentricity of the orbit is low, only 3%.

This planet was discovered in 2007 on September 20 and published on March 1. This planet was typical as it was discovered spectroscopically using the radial velocity method.[1]

See also[edit]


  1. ^ Johnson, John Asher; et al. (2008). "Retired A Stars and Their Companions. II. Jovian Planets Orbiting κ CrB and HD 167042". The Astrophysical Journal. 675 (1): 784–789. arXiv:0711.4367Freely accessible. Bibcode:2008ApJ...675..784J. doi:10.1086/526453. 

External links[edit]

Coordinates: Sky map 18h 10m 31.6403s, +54° 17′ 11.588″