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HD 114783 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 114783</td></tr><tr> <td colspan="2">Constellation</td> <td>Virgo</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>13h 12m 43.786s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–02° 15′ 54.13″[1]</td></tr><tr><td colspan="2">Distance</td><td>66.9 ± 0.8[1] ly
(20.5 ± 0.2[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K0V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.169 ± 0.068 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.070 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>1.268 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.085 ± 0.033</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>496.9 ± 2.3 d
(1.360 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>25.69 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>93 ± 25°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,450,840
±37 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>30.2±0.75 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.034 ± 0.089 MJ
(328.6 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 15, 2001</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Vogt, Butler,
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[2]</td></tr> <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 114783 b is an exoplanet that has a minimum mass almost exactly that of Jupiter. However, since the true mass is not known, it may be more massive, but not likely much. It orbits the star 20% further than Earth orbits the Sun. The orbit is quite circular.[2][3]

See alsoEdit

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664. Vizier catalog entry
  2. 2.0 2.1 (2002). Ten Low-Mass Companions from the Keck Precision Velocity Survey. The Astrophysical Journal 568 (1): 352–362.
  3. (2006). Catalog of Nearby Exoplanets. The Astrophysical Journal 646 (1): 505–522.

External links Edit

Coordinates: Sky map 13h 12m 43.7860s, −02° 15′ 54.143″ Template:Nearest bright star systems


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