astro.wikisort.org - Meteorite

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.

HD 155358 b

Discovery
Discovered by	Cochran et al.
Discovery site	University of Texas
Discovery date	May 10, 2007
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.628 ± 0.02 AU (93,900,000 ± 3,000,000 km)
Eccentricity	0.112±0.037
Orbital period (sidereal)	195±1.1 d
Time of periastron	2,453,950 ±10.4
Argument of periastron	162±20
Semi-amplitude	34.6±3
Star	HD 155358

See also

• HD 155358 c

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

• The Extrasolar Planets Encyclopaedia: HD 155358 b

На других языках

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[de] HD 155358 b

HD 155358 b ist ein Exoplanet, der den gelben Zwerg HD 155358 alle 195 Tage umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.

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- [en] HD 155358 b

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