WORLDWALKHD 158259 c
HD 158259 c is a frozen water-rich world orbiting a Sun-like star 88.2 ly away. A year there lasts 3.4 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, its temperature is unknown, so the game assumes one.
What it would be like in Worldwalk imagined
Nobody has seen the surface of HD 158259 c. The game builds it from the real numbers above: you land on a frozen shell of ice.
- Air: thin N₂ (nitrogen) · a guess. Surface pressure: 0.03 bar.
- A 70 kg explorer would feel like 79 kg.
- A jump that clears 50 cm on Earth would reach about 44 cm.
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.
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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.