WASP-20

WASP-20, also known as CD-24 102, is a binary star system in the equatorial constellation Cetus, located at a distance of about 940 ly from the Sun. The primary star is an F-type main sequence star and hosts one confirmed exoplanet, WASP-20b.

Stellar properties
WASP-20 is a star of spectral type F9, aged $1.26$ billion years. Its mass is 1.200 ± 0.041 solar masses for a radius of 1.392 ± 0.044 solar radii, or a density of 0.630 ± 0.046 grams per cubic centimeter.

Planetary system
WASP-20b is a transiting hot Jupiter discovered in 2014. WASP-20b orbits WASP-20 in less than five Earth days very close to its star (0.06 AU) in a circular (near-zero eccentricity) orbit. The orbit is inclined by 85.56 ± 0.22° relative to the plane of the sky and is thus edge-on, as necessary for a transit to be observed.