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K2-228 b

K2-228 b is a hot Earth-size planet orbiting an orange star 422.2 ly away. A year there lasts 2.7 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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EarthK2-228 b
Gravity12.86 m/s²1.31× Earth estimated
Size1.21× Earthradius measured
Mass1.92× Earthestimated
Temperature≈ 641 °Cequilibrium temperature measured
Distance422 light-yearsfrom the Sun
Its star4,715 Kan orange dwarf
One year2.7 daystime to orbit its star
Discovered2018transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of K2-228 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 K2-228 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.