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HD 155358 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 155358</td></tr><tr> <td colspan="2">Constellation</td> <td>Hercules</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>17h 09m 34.6168s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+33° 21′ 21.078″</td></tr><tr><td colspan="2">Distance</td><td>142±4 ly
(43±1 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>0.89 M</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>5868 K</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>-0.68</td></tr><tr> <td>Age</td> <td style="text-align: center"></td> <td>11.9 Gyr</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.628±0.02 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.112±0.037</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>195±1.1 d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>162±20°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,453,950
±10.4 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>34.6±3 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.895 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>May 10, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Cochran et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>University of Texas</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

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 Edit

References Edit

External links Edit

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

es:HD 155358#Sistema planetario

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