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HD 87883 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 87883</td></tr><tr> <td colspan="2">Constellation</td> <td>Leo Minor</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>10h 08m 43.140s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+34° 14′ 32.13″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>7.56</td></tr><tr><td colspan="2">Distance</td><td>59.4 ± 0.6[1] ly
(18.2 ± 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>3.60 ± 0.08 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.69 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>5.51 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.53 ± 0.12</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>2754 ± 87 d
(7.54 ± 0.24 y)</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>191 ± 15°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>11139 ± 90 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.78 ± 0.34 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>August 13, 2009</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td></td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</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 87883 b is an extrasolar planet which orbits the K-type main sequence star HD 87883, located approximately 59 light years away in the constellation Leo Minor. It is a long-period planet, taking seven and a half years to orbit the star at the average distance of 3.60 AU. However this planet orbits in a very eccentric path, which ranges distance from as close as 1.69 AU to as far as 5.51 AU. This planet was detected by radial velocity method on August 13, 2009.[2]

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 (2009). Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory. The Astrophysical Journal 703 (2): 1545–1556.

Coordinates: Sky map 10h 08m 43.1395s, +34° 14′ 32.135″ Template:Nearest bright star systems


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