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K2-122 b

K2-122 b is a hot Earth-size planet orbiting an orange star 235 ly away. Its star system has 2 stars. A year there lasts 2.2 days. It was found using the transit method: it dims its star as it passes in front. Note: its mass is estimated from its size.

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EarthK2-122 b
Gravity12.03 m/s²1.23× Earth estimated
Size1.16× Earthradius measured
Mass1.65× Earthestimated
Temperature≈ 496 °Cequilibrium temperature measured
Distance235 light-yearsfrom the Sun
Its star4,009 Kan orange dwarf, in a system of 2 stars
One year2.2 daystime to orbit its star
Discovered2017transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of K2-122 b. The game builds it from the real numbers above: you land on bare, cratered rock with no air.

Pack the right suit. Choose 3 of 6 modules (cooling, heating, pressure hull, extra oxygen, radiation shield, jetpack), complete 3 surveys and get back to the lander before your oxygen runs out.

Play K2-122 b

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Sizes, masses, temperatures and orbits come from the NASA Exoplanet Archive (Planetary Systems Composite table). Values marked estimated are calculated from the other measurements; the surface and air are imagined for the game.