HD 155358 b

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HD 155358 b
Exoplanet List of exoplanets
Parent star
Star HD 155358
Constellation Hercules
Right ascension (α) 17h 09m 34.6168s
Declination (δ) +33° 21′ 21.078″
Distance 142±4 ly
(43±1 pc)
Spectral type G0
Mass (m) 0.89 M
Temperature (T) 5868 K
Metallicity [Fe/H] -0.68
Age 11.9 Gyr
Orbital elements
Semi-major axis (a) 0.628±0.02 AU
Eccentricity (e) 0.112±0.037
Orbital period (P) 195±1.1 d
Argument of
(ω) 162±20°
Time of periastron (T0) 2,453,950
±10.4 JD
Semi-amplitude (K) 34.6±3 m/s
Physical characteristics
Minimum mass (m sin i) 0.895 MJ
Discovery information
Discovery date May 10, 2007
Discoverer(s) Cochran et al.
Discovery method Radial velocity
Discovery site University of Texas
Discovery status Published

HD 155358 b is a gas giant planet that orbits the star HD 155358, located 142 light years away in the constellation Hercules. This planet orbits at a distance about 63% of distance between Earth and the Sun and has a moderate eccentricity. The planet mass is at least 89% of Jupiter, depending on inclination of the orbit and true mass of the star. It takes over half a year to orbit the star.

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Coordinates: Sky map 17h 09m 34.6168s, +33° 21′ 21.078″