Eris planet
- how big is eris
- how big is eris compared to earth
- how big is eris compared to pluto
- how big is eris in km
Where is eris located!
What is eris made of
Eris
Eris is one of largest the dwarf planets in our solar system. It's about the same size as Pluto, but it's three times farther from the Sun.
Quick Facts
A day on Eris is 25.9 hours
A year on Eris is equal to 557 Earth years.
The radius of Eris is about 722 miles, or 1,163 kilometers.
Eris has one moon called Dysnomia.
Eris Facts
The discovery of Eris help trigger a debate in the scientific community that led to the International Astronomical Union’s decision in 2006 to clarify the definition of a planet.
Pluto, Eris, and other similar objects are now classified as dwarf planets.
Eris was discovered on Jan. 5, 2005, from data obtained on Oct. 21, 2003, during a Palomar Observatory survey of the outer solar system by Mike Brown, a professor of planetary astronomy at the California Institute of Technology; Chad Trujillo of the Gemini Observatory; and David Rabinowitz of Yale University.
Eris: Significant Dates
- Jan 8, 2005: Scientists announce they have discovered a Pluto-sized world billions of miles beyond the orbit of
- how big is eris planet
- how big is eriskay