erisíüds

Erisüds, also known as Eris, is a dwarf planet located in the scattered disc region of the outer Solar System. It was discovered in 2005 by a team led by Mike Brown and was initially designated as 2003 UB313. The name "Eris" was chosen in 2006, following a public naming contest, and it was officially recognized by the International Astronomical Union (IAU) in 2006. Eris is notable for being the most massive known dwarf planet in the Solar System, with a diameter of approximately 2,326 kilometers.

Eris is composed primarily of rock and ice, and it has a single known moon, Dysnomia. The surface of Eris is covered in methane ice, which gives it a reddish hue. Eris has a highly elliptical orbit, taking approximately 557 Earth years to complete one orbit around the Sun. Its orbit is inclined at an angle of about 44 degrees to the ecliptic plane.

The discovery of Eris played a significant role in the reclassification of Pluto as a dwarf planet in 2006. Eris is currently in the scattered disc, a dynamically unstable region beyond the Kuiper belt. Its orbit is influenced by the gravitational pull of Neptune, which occasionally brings it closer to the Sun. Eris is a fascinating object of study for astronomers, providing insights into the formation and evolution of the outer Solar System.