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Loup_Ombrage's picture

A new scientific defination states that we now have 12 planets....
Including Charon, Pluto's "moon" that orbits it at the same speed that Pluto turns on it's axis. (Which is a barbell orbit or something, and isn't considered a proper orbit for some reason).

Quote:
Pluto would remain a planet but would fall into a newly created category called Plutons, which are distinguished from classical planets in that they take longer than 200 years to orbit the sun.

Pluto would be joined in this category by two other celestial bodies, Xena and Charon, while another, Ceres, would be known as a dwarf planet.

The complete article is here.