Moon
Charon
Moon of Pluto
Largest natural satellite of Pluto
Photo: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex · Public domain · Wikimedia Commons
Charon, formal designation (134340) Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto. It has a mean radius of 606 km (377 mi). Charon is a planetary-mass moon and the sixth-largest known trans-Neptunian object after Pluto, Eris, Haumea, Makemake, and Gonggong. It was discovered in 1978 at the United States Naval Observatory in Washington, D.C., using photographic plates taken at the United States Naval Observatory Flagstaff Station (NOFS).
Description from Wikipedia (CC BY-SA 4.0).
Key facts
Distance
Orbits Pluto
Orbits
Pluto
Mean radius
604 km
Orbital period
6.39 days
Discovered
1978 · James W. Christy
Orbits
Pluto
