Charon (moon)

Charon is a moon of the dwarf planet Pluto. It is half as wide as Pluto and is much like the dwarf planet itself. It was discovered many years after Pluto. They are sometimes considered a binary system, as Charon does not orbit Pluto, and Pluto does not orbit Charon. They orbit a barycentre in space.^[1]

1. ↑ C.B. Olkin, L.H. Wasserman, O.G. Franz (2003). "The mass ratio of Charon to Pluto from Hubble Space Telescope astrometry with the fine guidance sensors" (PDF). Icarus. 164 (1): 254–259. Bibcode:2003Icar..164..254O. doi:10.1016/S0019-1035(03)00136-2. Retrieved 2007-03-13.{{cite journal}}: CS1 maint: multiple names: authors list (link)