Exoplanet
Orbits within the habitable zone of one star in a triple-star system, one of the most Earth-like exoplanets known at its discovery.
| Type | Exoplanet |
|---|---|
| Orbits | Gliese 667 C |
| Distance from Earth | 23.6 ly |
| Diameter | 21,700 km |
| Mass | 2.27 × 10²⁵ kg |
| Temperature | 4°C |
| Orbital period | 28 days |
| Apparent magnitude | 10.25 |
| Hemisphere | Southern |
| Discovered | 2013 |
Every exoplanet here was found indirectly, by the wobble or the dimming it causes in its own star, since none is close enough to photograph in real detail.
At 21,700 km across, Gliese 667 Cc is 1.7 times the diameter of Earth.
Its mass is 3.8 times the mass of Earth.
A single orbit takes 28.2 days.
The light reaching us from Gliese 667 Cc tonight left it around 24 years ago.
Of the 22 exoplanets these pages cover, only 1 lie closer to us.
An average temperature of 277 K works out at 4 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 2013.
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