HD 27631 b[1]
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 27631</td></tr><tr> <td colspan="2">Constellation</td> <td>Horologium</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>04h 19m 45.469s[2]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–41° 57′ 36.97″[2]</td></tr><tr><td colspan="2">Distance</td><td>148 ± 5[2] ly
(45 ± 1[2] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G3IV</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>3.25 ± 0.07 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.12 ± 0.06</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>2208 ± 66 d</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2.45387e+06 ± 224 JD</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>>1.45 ± 0.14 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>Sept. 13, 2011</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>MARMIER et al.[1]</td></tr><tr> <td colspan="2">Discovery method</td> <td>doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>HARPS</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[1]</td></tr> <tr style="background-color: #A0B0FF;"><td align=center colspan=3>Database references</td></tr><tr valign=baseline><td colspan=2>Extrasolar Planets
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

HD 27631 b is an extrasolar planet that has more mass than Jupiter. It orbits 3.25 AU from the star, taking six years to revolve around the parent star HD 27631. Its orbit is eccentric, around 12%.[1]


  1. 1.0 1.1 1.2 1.3 (2013). The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets. Astronomy and Astrophysics 551.
  2. 2.0 2.1 2.2 2.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664.Vizier catalog entry

External links Edit

Coordinates: Sky map 04h 19m 45.005s, −41° 57′ 37″Template:Astronomy-stub

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