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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.[1] Its radius best fits the model of Jonathan Fortney.[2]

WASP-14b
Size comparison of WASP-14b with Jupiter.
Discovery
Discovered byCameron et al. (SuperWASP)
Discovery siteSAAO
Discovery dateApril 1, 2008
Detection method
Transit
Orbital characteristics
Semi-major axis
0.037+0.001
−0.002 AU
Eccentricity0.095+0.004
−0.007
Orbital period (sidereal)
2.243756+5E-6
−1E-6 d
Inclination84.79+0.52
−0.67
Argument of periastron
254.9+0.92
−1.72
StarWASP-14
Physical characteristics
Mean radius
1.259+0.08
−0.058 RJ
Mass7.725+0.43
−0.67 MJ
Mean density
5,133 kg/m3 (8,652 lb/cu yd)
Surface gravity
126.2 m/s2 (414 ft/s2)
12.87 g
Temperature2800

    Orbit


    First calculation of WASP-14b's Rossiter–McLaughlin effect and so spin-orbit angle was −14 ± 17 degrees.[3] It is too eccentric for its age and so is possibly pulled into its orbit by another planet.[1] The study in 2012 has updated spin-orbit angle to 33.1±7.4°.[4]


    References


    1. Joshi, Y. C.; et al. (2008). "WASP-14b: A 7.7 Mjup transiting exoplanet in an eccentric orbit". Monthly Notices of the Royal Astronomical Society. 392 (4): 1532–1538. arXiv:0806.1478. Bibcode:2009MNRAS.392.1532J. doi:10.1111/j.1365-2966.2008.14178.x.
    2. Fortney; Marley, M. S.; Barnes, J. W. (2007). "Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits". The Astrophysical Journal. 659 (2): 1661–1672. arXiv:astro-ph/0612671. Bibcode:2007ApJ...659.1661F. doi:10.1086/512120.
    3. Winn, Joshua N. (2008). "Measuring accurate transit parameters". Proceedings of the International Astronomical Union. 4: 99. arXiv:0807.4929v2. Bibcode:2009IAUS..253...99W. doi:10.1017/S174392130802629X.
    4. Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments, 2012, arXiv:1206.6105


    Media related to WASP-14b at Wikimedia Commons


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    На других языках

    - [en] WASP-14b

    [es] WASP-14b

    WASP-14b Es un planeta extrasolar que orbita la estrella WASP-14, estrella de magnitud aparente 9.9, clase tipo espectral F5 y que posee una temperatura en su fotósfera de 6400 K. Se encuentra a unos 570 años luz de distancia.

    [ru] WASP-14 b

    WASP-14B — экзопланета, обнаруженная в 2008 году по программе SuperWASP.


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