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HD 5319 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 5319</td></tr><tr> <td colspan="2">Constellation</td> <td>Cetus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>00h 55m 01.40s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+00° 47′ 22.4″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.05</td></tr><tr><td colspan="2">Distance</td><td>370 ± 40[1] ly
(110 ± 10[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K0III</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.74 AU
(260 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>17.4 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.53 AU
(229 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>1.95 AU
(292 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.12</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>669.37 d
(1.8326 y)</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>103 ± 14°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,453,163 ± 30 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>39.4 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.94 MJ
(617 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>January 11, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Robinson et al.[2]</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>California & Carnegie
Planet Search
</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 5319 b is a gas giant exoplanet approximately 370 light years away[1] in the constellation of Cetus. This planet has a minimum mass nearly two times more than Jupiters. The planet has an almost circular orbit, ranging from 1.53 to 1.95 AU with a period of 1.8 years.[2]

See also Edit

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 1.4 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664.Vizier catalog entry
  2. 2.0 2.1 2.2 (2007). Two Jovian-Mass Planets in Earthlike Orbits. The Astrophysical Journal 670 (2): 1391–1400.

Coordinates: Sky map 00h 55m 01.4005s, +00° 47′ 22.392″


de:HD 5319 b

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