HD 167042 b

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 periastron	(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 Encyclopaedia		data
SIMBAD		data
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 M_J 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 2000 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.

See also

• HD 16175 b
• Kappa Coronae Borealis b