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WASP-14b
Extrasolar planet List of extrasolar planets
300px
Size comparison of WASP-14b with Jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>WASP-14</td></tr><tr> <td colspan="2">Constellation</td> <td>Boötes</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>14h 33m 06.356s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+21° 53′ 40.99″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>9.75</td></tr><tr><td colspan="2">Distance</td><td>520 ± 245 ly
(160 ± 75 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>F5V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.037+0.001
−0.002
AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.033 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.041 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.095+0.004
−0.007
</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>2.243756+5E-6
−1E-6
d</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>84.79+0.52
−0.67
°</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>254.9+0.92
−1.72
°</td></tr><tr> <td>Time of transit</td> <td style="text-align: center">(Tt)</td> <td>2454465.81963+0.00065
−0.00034
JD</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>7.725+0.43
−0.67
MJ</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>1.259+0.08
−0.058
Template:Jupiter radius</td></tr><tr><td>Density</td><td style="text-align: center">(ρ)</td><td>5133 kg m-3</td></tr><tr><td>Surface gravity</td><td style="text-align: center">(g)</td><td>126.2 m/s² (12.87 g)</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>2800 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 1, 2008</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Cameron et al. (SuperWASP)</td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit</td></tr><tr> <td colspan="2">Discovery site</td> <td>SAAO</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>

WASP-14b is an extrasolar planet discovered in 2008 by SuperWASP using the transit method. Follow-up radial velocity measurements showed that the mass of WASP-14b is almost eight times larger than that of Jupiter. The radius found by the transit observations show that it has a radius 25% larger than Jupiter. This makes WASP-14b one of the densest exoplanets known.[2] Its radius best fits the model of Fortney.[3]

File:WASP-14 b rv.pdf
File:Planet WASP-14 b.png

RotationEdit

As of August 2008, the most recent calculation of WASP-14b's Rossiter-McLaughlin effect and so spin-orbit angle was that of Joshi.[4] This is −14 ± 17 degrees. It is too eccentric for its age and so is possibly pulled into its orbit by another planet.[2]

ReferencesEdit

  1. 1.0 1.1 (2013). The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4). The Astronomical Journal 145 (2).Vizier catalog entry
  2. 2.0 2.1 2.2 (2008). WASP-14b: A 7.7 Mjup transiting exoplanet in an eccentric orbit. Monthly Notices of the Royal Astronomical Society 392 (4): 1532–1538.
  3. Fortney et al. (2007). Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits. The Astrophysical Journal 659 (2): 1661–1672.
  4. (2008). Measuring accurate transit parameters. Proceedings of the International Astronomical Union 4: 99.


External linksEdit

Template:Commonscat-inline

Coordinates: Sky map 14h 33m 06s, +21° 53′ 41″


de:WASP-14 b

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