|Orbit||semi-major axis 39.505 AU, eccentricity 0.24171|
|Year||90692.7 days (248.30 Earth years)|
|Mean Temperature||~44 K|
28978 Ixion is a Sol system dwarf planet.
It was discovered by the Deep Ecliptic Survey and the Cerro Tololo Inter-American Observatory on 22 May 2001, and is named after the Greek mythic figure who was reckoned the first man guilty of kin-slaying.