Charon

Charon, also known as Pluto I, is a moon of Pluto.

22nd of June 1978

 * Charon was discovered by James W. Christy.

Other Facts

 * When it was first discovered, Charon was called S/1978 P 1. It was renamed on the 24th of June 1978 by it's discoverer.
 * Charon is about 1,207 km / 750 miles in diameter.
 * Charon is tidally locked with Pluto.
 * Charon's surface temperature is -220°C.