Dwarf Planet
Eris
TypeDwarf Planet
Mass1.66 × 10²² kg
Diameter2,326 km
Orbital Radius10,120 million km
Orbital Period204,199 days
Rotation Period25.9 hours
Known Moons1
Surface Gravity0.82 m/s²
Average Temp-243 °C
AtmospherePossible N2, CH4 (thin)
Discovered ByMike Brown
Discovery Year2005
About Eris
Slightly more massive than Pluto. Its discovery triggered the debate that led to the reclassification of Pluto. Has one known moon, Dysnomia. Extremely distant, currently about 96 AU from the Sun. Surface appears almost white, likely covered in nitrogen ice.
Eris has 1 known moons in total.
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