WASP-4b
WASP-4b is an extrasolar planet approximately 880 light-years away in the constellation of Phoenix.
The planet was the discovered by the SuperWASP project using cameras in South Africa. After its discovery, the mass of the WASP-4 b was determined by measuring the radial velocity of WASP-4, which confirmed that the object that caused the transit was a planet.
The equilibrium planetary temperature would be 1650 K, but measured temperature is higher at 1900 K.
The study in 2012, utilizing a Rossiter–McLaughlin effect, have determined the planetary orbit is probably aligned with the equatorial plane of the star, misalignment equal to -1°.
