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GJ 3988 b

GJ 3988 b is a warm water-rich world orbiting a red dwarf star 32.3 ly away. A year there lasts 6.9 days. It was found using the radial velocity method: it makes its star wobble. 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 size is estimated from its mass, only a minimum mass is known.

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EarthGJ 3988 b
Gravity11.96 m/s²1.22× Earth estimated
Size1.74× Earthradius estimated
Mass3.69× Earthmeasured
Temperature≈ 75 °Cequilibrium temperature measured
Distance32.3 light-yearsfrom the Sun
Its star3,273 Ka red dwarf
One year6.9 daystime to orbit its star
Discovered2023radial velocity

What it would be like in Worldwalk imagined

Nobody has seen the surface of GJ 3988 b. The game builds it from the real numbers above: you land on hot, steamy shores of a water world.

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 GJ 3988 b

Similar worlds nearby

Gl 49 b32.1 light-yearsAU Mic c31.7 light-yearsGJ 1265 b33.4 light-yearsL 363-38 b33.4 light-yearsG 192-15 c31.1 light-yearsHD 285968 b30.9 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.