K2-66b

K2-66b is a confirmed mega-Earth orbiting the subgiant K2-66, about 520 parsec from Earth in the direction of Aquarius. It is an extremely hot and dense planet heavier than Neptune, but with only about half its radius.

Mass, radius, and temperature
K2-66b is a mega-Earth with radius and mass. The planet's temperature is highly variable due to the variability of its host star, and is currently estimated at 1372 K.

Orbit
The planet orbits every 5.07 days at 0.06 AU. It orbits within a "photoevaporation desert", where orbiting exoplanets should be very uncommon. K2-66b's orbit is nearly circular.

Star
The star, K2-66 is a G1 sub-giant in Aquarius. It has a sun-like temperature of 5887 K, which corresponds to its spectral class and is very close to that of the rotationally variable star Kepler-130. It has a radius of and a mass of. Its metallicity is −0.047, and its apparent magnitude is 11.71.