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 periastron |
(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.
See also
References
- Cochran, W.; et al. (2007). "A Planetary System Around HD 155358: The Lowest Metallicity Planet Host Star". The Astrophysical Journal 665 (2): 1407–1412. arXiv:0705.3228. Bibcode:2007ApJ...665.1407C. doi:10.1086/519555.
External links
Coordinates: 
17h 09m 34.6168s, +33° 21′ 21.078″
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