HD 11506 b
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>2.43+0.24
AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.90 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>2.96 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.22+0.25
</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>1270+200
y)</td></tr><tr> <td>Argument of
</td> <td style="text-align: center">(ω)</td> <td>4.5+0.6
°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2453666.3 ± 102 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>84.2 ± 3 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>3.44+0.9

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 10, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Fischer et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>California, Template:Country data United States</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
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

HD 11506 b is an extrasolar planet that orbits the star HD 11506 169 light years away in the constellation of Cetus. This planet was discovered in 2007 by the N2K Consortium using the Keck telescope to detect the radial velocity variation of the star caused by the planet.[2] A second planet, HD 11506 c, was discovered by reanalysing these measurements.[3]

See alsoEdit


  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 (2007). Five Intermediate-Period Planets from the N2K Sample. The Astrophysical Journal 669 (2): 1336–1344.
  3. (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″

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.