Pluto's elliptical orbit

The dwarf planet Pluto is the furthest planet in our solar system and takes about 247 earth years to make its orbit around the sun. For the first time known to astronomers, Pluto's elliptical orbit moved inside Neptune's orbit in February 1979 and stayed this way for twenty years until February 1999. Pluto is the only planet in our solar systems with an eccentric orbit.
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