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HD 117207 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 117207</td></tr><tr> <td colspan="2">Constellation</td> <td>Centaurus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>13h 29m 21.1137s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−35° 34′ 15.589″</td></tr><tr><td colspan="2">Distance</td><td>108 ly
(33 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G7IV-V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>3.79 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>3.24 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>4.34 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.144±0.035</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>2597±41 d
(7.110 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>15.9 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>81.7±19.9°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2450666.43±148.89 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>26.6±0.93 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.88 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>25 January 2005</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Marcy et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>Keck Observatory</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
HIP 65808 b

<tr style="background-color: #A0B0FF;"><td align=center colspan=3>Database references</td></tr><tr valign=baseline><td colspan=2>Extrasolar Planets
Encyclopaedia
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

HD 117207 b is an extrasolar planet orbiting at 3.79 astronomical units taking about 2597 days to complete its orbit around HD 117207. Its orbit is moderate in eccentricity. This planet was announced in January 2005 by Marcy in Keck Observatory. The planet has at least 1.88 Jupiter masses.[1][2]

ReferencesEdit

  1. (2005). Five New Extrasolar Planets. The Astrophysical Journal 619 (1): 570–584.
  2. (2006). Catalog of Nearby Exoplanets. The Astrophysical Journal 646 (1): 505–522.

External links Edit

Coordinates: Sky map 13h 29m 21.1137s, −35° 34′ 15.589″


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