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55 Cnc B c

55 Cnc B c is a temperate water-rich world orbiting a red dwarf star 40.7 ly away. Its star system has 2 stars. A year there lasts 33.8 days. It was found using the radial velocity method: it makes its star wobble. Its temperature could allow liquid water, which makes it a habitable-zone candidate, not a confirmed habitable world. 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. It sits where a planet could be warm enough for liquid water, in the so-called habitable zone.

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Earth55 Cnc B c
Gravity11.14 m/s²1.14× Earth estimated
Size2.16× Earthradius estimated
Mass5.3× Earthmeasured
Temperature≈ −43 °Cequilibrium temperature measured
Distance40.7 light-yearsfrom the Sun
Its star3,286 Ka red dwarf, in a system of 2 stars
One year33.8 daystime to orbit its star
Discovered2025radial velocity

What it would be like in Worldwalk imagined

Nobody has seen the surface of 55 Cnc B c. The game builds it from the real numbers above: you land on a deep global ocean with rocky islands.

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 55 Cnc B c

Other planets around 55 Cnc B

55 Cnc B b1.23× Earth

Similar worlds nearby

55 Cnc e41 light-yearsHD 69830 b41 light-yearsHD 69830 c41 light-yearsGJ 422 b41.3 light-yearsGJ 806 c39.3 light-yearsHD 40307 f42.2 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.