Welcome to Kepler-22b

Captain's Log

Kepler-22b lies 600 light-years away. It was the first Kepler planet found in the habitable zone of its parent star, but the world is considerably larger than Earth — about 2.4 times our planet's size. It's unclear if this "super-Earth" planet is rocky, liquid or gaseous. Its orbit is about 290 days long.

Planet name: Kepler-22b

Discovery date: 5 December 2011 (announced)

Mean radius: 2.4 +0.09 −0.07 R⊕

Mass: < 52.8 M⊕

Temperature: 295 K (22 °C; 71 °F)

Star: Kepler-22

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