Which space object has the most eccentric orbit?
Correct answer: Pluto

Lady V
Player ccbkd, it's a celestial body and has been classified as a dwarf planet. It now has dozens other dwarf planet friends within our solar system, so all the people who feel sad that Pluto is no longer regarded as a planet don't need to be sad.

Elfcounsel
surfinmike thanks, An orbit refers to a planet's path around the sun not it's rotation.