Home › Planets › H › HD 20794 d

HD 20794 d

HD 20794 d is a warm water-rich world orbiting a Sun-like star 19.6 ly away. A year there lasts 89.7 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.

▶ Land on HD 20794 dFree · plays in your browser
EarthHD 20794 d
Gravity11.31 m/s²1.15× Earth estimated
Size2.04× Earthradius estimated
Mass4.8× Earthmeasured
Temperature≈ 115 °Cequilibrium temperature measured
Distance19.6 light-yearsfrom the Sun
Its star5,368 Ka Sun-like star
One year89.7 daystime to orbit its star
Discovered2011radial velocity

What it would be like in Worldwalk imagined

Nobody has seen the surface of HD 20794 d. 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 HD 20794 d

Other planets around HD 20794

HD 20794 b1.28× EarthHD 20794 e1.16× EarthHD 20794 f1.12× Earth

Similar worlds nearby

HD 180617 b19.3 light-yearsHN Lib b20.4 light-yearsGJ 229 A c18.8 light-yearsGJ 229 b18.8 light-yearsGJ 581 c20.5 light-yearsGJ 338 B b20.7 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.