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HD 187085 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 187085</td></tr><tr> <td colspan="2">Constellation</td> <td>Sagittarius</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>19h 49m 33.9667s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–37° 46′ 49.981″</td></tr><tr><td colspan="2">Distance</td><td>147 ly
(45 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>2.05 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.38 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>2.72 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.33[1]</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>986 d
(2.70 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>22.7 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>94°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,450,912 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>26 m/s</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>>0.75 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>March 14, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Marcy et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Template:Country data Australia</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
HIP 97546 b

HD 187085 b is an extrasolar planet discovered in 2006 by a team led by Geoffrey Marcy. HD 187085 b orbits its star in a highly eccentric orbit. The discovery was made as part of the Anglo-Australian Planet Search. Their interpretation of the data set the eccentricity at 0.47. Using a statistical computer program, another team reinterpreted the same data for a lower eccentricity of 0.33.[1]

See alsoEdit

ReferencesEdit

External linksEdit


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