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K2-66b
Mega-Earth exoplanet orbiting K2-66 From Wikipedia, the free encyclopedia
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K2-66b is a confirmed[2] mega-Earth orbiting the subgiant K2-66, about 520 parsecs (1,700 ly) from Earth in the direction of Aquarius.[1] It is an extremely hot and dense planet heavier than Neptune, but with only about half its radius.[3]
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Planet properties
Mass, radius, and temperature
K2-66b is a mega-Earth with radius 2.49 R🜨 and mass 21.3 M🜨.[4] The planet's temperature is highly variable due to the variability of its host star, and is currently estimated at 1,372 K (1,099 °C; 2,010 °F).[2]
Orbit
The planet orbits every 5.07 days at 0.06 AU.[1] It orbits within a "photoevaporation desert", where orbiting exoplanets should be very uncommon.[3][5] K2-66b's orbit is nearly circular.[2][6]
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Star
The star,[7] K2-66 is a G1 sub-giant in Aquarius.[4] It has a sun-like temperature of 5887 K,[1][2] which corresponds to its spectral class and is very close to that of the rotationally variable[8] star Kepler-130.[9][10][11] It has a radius of 1.67 R☉ and a mass of 1.11 M☉.[2] Its metallicity is −0.047, and its apparent magnitude is 11.71.[1]
See also
References
External links
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