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HD 11506 c
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 11506</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>01h 52m 50.53s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−19° 30′ 25.1″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>7.51</td></tr><tr><td colspan="2">Distance</td><td>169 ± 5[1] ly
(52 ± 2[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0V</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>1.19 ± 0.10 M</td></tr><tr> <td>Radius</td> <td style="text-align: center">(r)</td> <td>1.38 ± 0.15 R</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>6058 ± 51 K</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>0.31 ± 0.03</td></tr><tr> <td>Age</td> <td style="text-align: center"></td> <td>5.4 ± 1.6 Gyr</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.639+0.007
−0.017
AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.371 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.907 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.42+0.2
−0.42
</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>170.46+4
−6
d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>4.1+1
−1.8
°</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.82+0.31
−0.5
MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>February 18, 2009</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Tuomi and Kotiranta</td></tr><tr> <td colspan="2">Discovery method</td> <td>Bayesian analysis</td></tr><tr> <td colspan="2">Discovery site</td> <td>Turku, Template:Country data Finland</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 11506 c is an extrasolar planet located approximately 169 light years away in the constellation of Cetus, orbiting the 8th magnitude G-type main sequence star HD 11506. It is the second planet in this system and was discovered in 2009 by using Bayesian analysis on data previously collected by the N2K Consortium. It has a minimum mass 82% that of Jupiter and takes 170 days to complete its orbit around the star. However the orbit is very eccentric, in which the distance ranges from 0.37 to 0.91 AU.[2]

See also Edit

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). Bayesian analysis of the radial velocities of HD 11506 reveals another planetary companion. Astronomy and Astrophysics 496 (2): L13–L16.

Coordinates: Sky map 01h 52m 50.534s, −19° 30′ 25.107″


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