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Kepler-821 b

Kepler-821 b is a scorching super-Earth orbiting an orange star 2,004 ly away. A year there lasts 1.9 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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Gravity12.98 m/s²1.32× Earth estimated

Size1.31× Earthradius measured

Mass2.27× Earthestimated

Temperature≈ 942 °Cequilibrium temperature measured

Distance2,004 light-yearsfrom the Sun

Its star5,191 Kan orange dwarf

One year1.9 daystime to orbit its star

Discovered2016transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of Kepler-821 b. The game builds it from the real numbers above: you land on bare, cratered rock with no air.

Air: None (bare rock). Surface pressure: almost none.
A 70 kg explorer would feel like 93 kg.
A jump that clears 50 cm on Earth would reach about 38 cm.
With almost no air, a hammer and a feather fall side by side, and sound cannot travel.

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 Kepler-821 b

Similar worlds nearby

Kepler-1274 b2,005 light-years Kepler-1559 b2,005 light-years Kepler-1120 b2,007 light-years Kepler-1485 b2,008 light-years Kepler-262 b2,000 light-years Kepler-589 c1,999 light-years

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.