Diameter: 2326 km
SMA: 68.01 AU
Period: 561.2877 years
Eccentricity: 0.435763
Rotation: 1.07917 days
Inclination: 43.84°
Axial tilt: 0°

Mass: 1.67x10²⁴kg
Density: 2520 kg/m³
Gravitation: 0.83 m/s²
Escape velocity: 1.38 m/s
Orbit velocity: 3.44 km/s (mean)

Moons: 1

rock and ice

Discovered in 2005, 136199 Eris is the most massive known dwarf planet. It is estimated to be 2326 km in diameter, larger and 27% more massive than Pluto. Eris has a elongated orbit with a period of 557 years and a mean distance of 68 AU and has a 342 km wide moon, Dysnomia, in 37350 km distance, orbiting in 15.7 days. Eris rotates in 25.9 hours.