Exoplanet
A 'circumbinary' planet orbiting two stars at once, evoking Tatooine's twin sunsets from Star Wars.
| Type | Exoplanet |
|---|---|
| Orbits | Kepler-16 |
| Distance from Earth | 245 ly |
| Diameter | 104,600 km |
| Mass | 6.26 × 10²⁶ kg |
| Temperature | -67°C |
| Orbital period | 229 days |
| Apparent magnitude | 11.76 |
| Hemisphere | Northern |
| Discovered | 2011 |
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 104,600 km across, Kepler-16b is 8.2 times the diameter of Earth.
Its mass is 105 times the mass of Earth.
A single orbit takes 228.8 days.
The light reaching us from Kepler-16b tonight left it around 245 years ago.
An average temperature of 205.9 K works out at -67 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 2011.
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