Eris Dwarf Planet Profile
Mass: 16,700,000,000,000 billion kg
Diameter: 2,326 km (+- 12km)
Known Moons: 1
Notable Moons: Dysnomia
Orbit Distance: 10,120,000,000 km (68.01 AU)
Orbit Period: 560.90 Earth Years
Surface Temperature: -231°C
Discovery Date: January 5th 2005
Discovered By: M.E. Brown C.A. Trujillo & D.L. Rabinowitz
Size of Eris Compared to the Earth
Facts about the Dwarf Planet Eris
Eris was once considered for the position of tenth planet:
Eris is the most massive dwarf planet in the Solar System, exceeding Pluto’s mass by 28%. As such, it was a serious contender to be a tenth planet but failed to meet the criteria set out by the International Astronomical Union in 2006.
Eris was named after the Greek goddess of discord:
Fittingly, picking a name for the object took unusually long – more than 1.5 years after its discovery in 2005. Some of the rejected names were Xena, Lila, and Persephone (Pluto’s wife).
Eris may be the largest dwarf planet:
Eris is unquestionably the most massive of the known dwarf planets and was once thought to be the largest due to it’s relative brightness. After a stellar occultation in 2010 it’s diameter was calculated to be smaller than previously thought and more recent measurement suggested Pluto was larger than thought, however there is enough of a margin of error that either could be the largest.