WASP-14b

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 by	Cameron et al. (SuperWASP)
Discovery site	SAAO
Discovery date	April 1, 2008
Detection method	Transit
Orbital characteristics
Semi-major axis	0.037+0.001 −0.002 AU
Eccentricity	0.095+0.004 −0.007
Orbital period (sidereal)	2.243756+5E-6 −1E-6 d
Inclination	84.79+0.52 −0.67
Argument of periastron	254.9+0.92 −1.72
Star	WASP-14
Physical characteristics
Mean radius	1.259+0.08 −0.058 RJ
Mass	7.725+0.43 −0.67 MJ
Mean density	5.133 g/cm3[citation needed]
Surface gravity	126.2 m/s2 (414 ft/s2) 12.87 g
Temperature	2800

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]