WASP-94
WASP-94 is a binary star system located about away in the constellation Microscopium. It consists of two F-type stars separated by, corresponding to a projected separation of. Both stars are known to host exoplanets.
The binary system was first observed by John Herschel in 1834 and catalogued as HJ 5234. The designation WASP-94 comes from the Wide [Angle Search for Planets], and has been used since the system was found to host planets in 2014. While the two stars have similar spectral types, they differ in elemental abundance – WASP-94A has fewer volatile elements and more refractory elements than WASP-94B.
Planetary system
The two stars host a single known planet each. Both are hot Jupiters, gas giant planets completing orbits around their stars in just a few days.WASP-94Ab transits its host star, and it has also been detected by the radial velocity method. As a result, both its size and mass are known, which show that it is a low-density planet with a highly inflated radius. It has an equilibrium temperature of. Its orbit is retrograde and misaligned with the rotation of its host star. The atmosphere of WASP-94Ab appears to be relatively free of clouds, with sodium, water vapor and carbon dioxide being detected.
WASP-94Bb is a non-transiting planet that has been detected only by radial velocity, so it has no measured radius and true mass. Its minimum mass is 62% the mass of Jupiter.