WORLDWALKHD 219134 d
HD 219134 d is a hot water-rich world orbiting an orange star 21.3 ly away. A year there lasts 46.9 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 mass is estimated from its size.
What it would be like in Worldwalk imagined
Nobody has seen the surface of HD 219134 d. The game builds it from the real numbers above: you land on hot, steamy shores of a water world.
- Air: H₂O (water vapor) steam, N₂ (nitrogen) · a guess. Surface pressure: 6.8 bar.
- A 70 kg explorer would feel like 87 kg.
- A jump that clears 50 cm on Earth would reach about 40 cm.
- The air is about 7 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.
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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.