Charon is big! (compared to Pluto)

New images from Earth-based telescopes show Pluto and its big moon Charon together.

Sharpest ground-based images of Pluto and Charon

Charon truly is big compared to Pluto;  it has an approximate diameter of 1,207 km, while Pluto is 2,330 km.   Some astronomers don't call Pluto a dwarf planet, they call the Pluto system a dwarf double planet.