Last August, after 75 years
of planethood, Pluto lost its status when the International Astronomical Union (IAU) came up with a new definition of what it means to be a planet.
Best known for depriving Pluto
of planethood by showing that there are many similar bodies in orbit beyond Neptune, Eris's great distance from the sun means the effects of general relativity become negligible.
Not exact matches
According to a draft definition
of the term planet that was presented for approval at a meeting
of the International Astronomical Union in Prague, Czech Republic, in 2006, Charon would have met both qualifications for
planethood.