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K2-401 b

K2-401 b is a frozen water-rich world orbiting an orange star 654.7 ly away. A year there lasts 6.3 days. It was found using the transit method: it dims its star as it passes in front. Planets this size may be wrapped in thick gas; the game imagines it as a solid or water world you can walk on. Note: its mass is estimated from its size, its temperature is unknown, so the game assumes one.

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EarthK2-401 b
Gravity11.02 m/s²1.12× Earth estimated
Size2.26× Earthradius measured
Mass5.74× Earthestimated
Temperature?unknown: the game assumes about −153 °C
Distance655 light-yearsfrom the Sun
Its star4,213 Kan orange dwarf
One year6.3 daystime to orbit its star
Discovered2022transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of K2-401 b. The game builds it from the real numbers above: you land on a frozen shell of ice.

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 K2-401 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.