WORLDWALKHD 180617 b
HD 180617 b is a cold water-rich world orbiting a red dwarf star 19.3 ly away. Its star system has 2 stars. A year there lasts 105.9 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.
What it would be like in Worldwalk imagined
Nobody has seen the surface of HD 180617 b. The game builds it from the real numbers above: you land on a deep ocean under a hydrogen sky.
- Air: Rich in H₂ (hydrogen), H₂O (water vapor) · a guess. Surface pressure: 16 bar.
- A 70 kg explorer would feel like 69 kg.
- A jump that clears 50 cm on Earth would reach about 51 cm.
- The air is about 16 times denser than at sea level on Earth: thick enough to slow a falling rock.
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 HD 180617 bSimilar worlds nearby
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.