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WASP-94
From Wikipedia, the free encyclopedia
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WASP-94 is a binary star system located about 690 light-years (210 parsecs) away in the constellation Microscopium. It consists of two F-type stars separated by 15″, corresponding to a projected separation of 2700 au. Both stars are known to host exoplanets.[3]
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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.[3] 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.[6]
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Planetary system
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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.[3]
WASP-94Ab transits its host star, and it has also been detected by the radial velocity method.[3] 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 1508±75 K.[10] Its orbit is retrograde and misaligned with the rotation of its host star.[11] The atmosphere of WASP-94Ab appears to be relatively free of clouds, with sodium,[10] water vapor and carbon dioxide being detected.[12]
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.[3]
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See also
Other systems with multiple planet-hosting stars:
References
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