description Kepler-69c Overview
Kepler-69c is a super-Earth exoplanet announced in 2013, discovered using data from NASA's now-retired Kepler space telescope. It orbits a sun-like G-type star within the Kepler-69 system, positioned near the inner edge of the conservative habitable zone. Although its location initially suggested it might be a prime candidate for habitability, subsequent thermal models indicate it is likely a Venus analog. This means the planet is probably subjected to a runaway greenhouse effect, resulting in a scorched, inhospitable surface rather than a temperate Earth-like environment.
insights Ranking position
Kepler-69c ranks #45 of 264 in the Exoplanet ranking, behind WASP-17b, ahead of GJ 1214 b.
help Kepler-69c FAQ
Is Kepler-69c considered a potentially habitable planet?
It was announced in 2013 as a super-Earth near its star's habitable zone, but later assessment made a Venus-like outcome appear more plausible. Its orbit may expose it to too much stellar energy for stable Earth-like surface water.
How large is Kepler-69c compared with Earth?
Its measured radius is about 1.7 times Earth's radius, placing it in the super-Earth size range. Its mass and atmospheric composition have not been directly established, so its surface conditions remain uncertain.
How long is a year on Kepler-69c?
Kepler-69c completes an orbit in roughly 242 Earth days. It circles Kepler-69, a Sun-like star located in the constellation Cygnus.
How was Kepler-69c discovered?
NASA's Kepler space telescope detected it through transits, the small dips in starlight produced when a planet crosses its star. The same system also contains Kepler-69b, a hotter planet on a much shorter orbit.
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