Eris (dwarf planet) - Wikipedia
Eris is the ninth-most massive known object orbiting the Sun and the sixteenth-most massive overall in the Solar System (counting moons). It is also the largest known object in the solar system that has not been visited by a spacecraft.
Eris - NASA Science
2005年1月8日 · Dwarf planet Eris is a member of a group of objects that orbit in a disc-like zone beyond the orbit of Neptune called the Kuiper Belt. This distant realm is populated with thousands of miniature icy worlds, which formed early in the history of …
In Depth | Eris – NASA Solar System Exploration
The plane of Eris' orbit is well out of the plane of the solar system's planets and extends far beyond the Kuiper Belt, a zone of icy debris beyond the orbit of Neptune. As Eris orbits the Sun, it completes one rotation every 25.9 hours, making its day length similar to ours.
Eris Facts | Temperature, Surface, Information, History & Definition
2019年10月8日 · Eris is the most distant dwarf planet, located beyond the orbit of Neptune. It was discovered in 2005 and was originally classified as a planet. It is the second-largest dwarf planet discovered and it led to both it and Pluto’s demotion from planets to dwarf planets.
Scientists discern internal structure of mysterious dwarf planet Eris
2023年11月15日 · Named after the ancient Greek goddess of discord, Eris orbits at an average of about 68 times further from the sun than Earth, taking 557 years to complete one orbit. Pluto orbits at an average...
Dwarf Planets Dwarf Planets - Laboratory for Atmospheric and …
Eris orbits the Sun at the far reaches of our solar system in an area known as the scattered disk. Scattered disk objects (SDOs) tend to have highly inclined and eccentric orbits. Eris' orbit is tilted at an angle of 44 degrees with respect to the ecliptic .
Eris | Dwarf Planet, Kuiper Belt, Plutoid | Britannica
Eris revolves once about every 560 Earth years in a highly tilted, elliptical orbit. From its spectrum its surface appears to be coated with white methane ice. Eris has at least one moon, Dysnomia, about one-eighth its size, with an orbital period about two weeks long.
What Is Eris? - Science ABC
2024年6月2日 · One of the largest and furthest celestial bodies orbiting the Sun is the dwarf planet called Eris, which is located around 96.3 AU (8.95×10 9 mi, 1.441×10 10 km) from the Sun—further and bigger than Pluto.
Meet the Solar System's Dwarf Planets | Space
2011年8月22日 · Like Pluto, Eris has a highly elliptical orbit. But Eris is even more far-flung, orbiting the sun at an average distance of about 6.3 billion miles (10.1 billion km).
The Dwarf Planet Eris - Universe Today
2015年5月30日 · Eris is the largest dwarf planet in the Solar System, and the ninth largest body orbiting our Sun. Sometimes referred to as the “tenth planet”, it’s discovery is responsible for upsetting the...