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HD 168009 b

HD 168009 b is a hot large super-Earth orbiting a Sun-like star 76 ly away. A year there lasts 15.2 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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EarthHD 168009 b
Gravity10.05 m/s²1.02× Earth estimated
Size3.05× Earthradius estimated
Mass9.53× Earthmeasured
Temperature≈ 615 °Cequilibrium temperature measured
Distance76 light-yearsfrom the Sun
Its star5,778 Ka Sun-like star
One year15.2 daystime to orbit its star
Discovered2021radial velocity

What it would be like in Worldwalk imagined

Nobody has seen the surface of HD 168009 b. The game builds it from the real numbers above: you land on glowing iron-rich lava fields.

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 168009 b

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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.