Moon
Charon
TypeMoon
Mass1.586 × 10²¹ kg
Diameter1,212 km
Orbital Radius19,590 km
Orbital Period6.39 days
Rotation Period153.29 hours (retrograde)
Known Moons0
Surface Gravity0.288 m/s²
Average Temp-220 °C
AtmosphereNone (possible transient)
Discovered ByJames Christy
Discovery Year1978
About Charon
Pluto largest moon. So large relative to Pluto that the two orbit a point between them (barycenter). Has a dark reddish polar cap called Mordor Macula, made of organic compounds processed from Pluto atmosphere. Has canyons deeper than the Grand Canyon. Tidally locked with Pluto.
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