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HD 32518 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 32518</td></tr><tr> <td colspan="2">Constellation</td> <td>Camelopardalis</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>05h 09m 36.72s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+69° 38′ 21.9″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>6.436</td></tr><tr><td colspan="2">Distance</td><td>390 ± 30[1] ly
(121 ± 8[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K1III</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.59 ± 0.03 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.58 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.60 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.01 ± 0.03</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>157.54 ± 0.38 d
(0.4313 ± 0.001 y)</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>306.11 ± 126.71°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2452950.29 ± 13.66 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>3.04 ± 0.69 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>August 12, 2009</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Döllinger et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>TLS</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</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 32518 b is an extrasolar planet which orbits the K-type giant star HD 32518, located approximately 383 light years away in the constellation Camelopardalis. It has a minimum mass three times greater than Jupiter and orbits the intermediate-mass giant star at a distance of only 0.59 AU in a very circular orbit. The orbit takes 10.35 months to complete one round trip around the star.[2] This planet was detected by the radial velocity method on August 12, 2009.

References Edit

  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. (2009). Planetary companions around the K giant stars 11 Ursae Minoris and HD 32518. Astronomy and Astrophysics 505 (3): 1311–1317.

Coordinates: Sky map 05h 09m 36.7193s, +69° 38′ 21.844″


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