What are the distinguishing features of the dwarf planet Eris?

Eris is a dwarf planet located in the Kuiper Belt, a region of our solar system beyond the orbit of Neptune. Here are some of its distinguishing features:

• Size: Eris is one of the largest known dwarf planets, with a diameter of about 1,445 miles (2,326 kilometers).
• Orbit: Eris takes about 557 Earth years to orbit the sun, and its orbit is highly elliptical.
• Moons: Eris has one known moon, Dysnomia, which is about 150 miles (240 kilometers) in diameter.
• Surface: Eris is thought to have a rocky surface, covered in a layer of methane and nitrogen ice.
• Discovery: Eris was discovered in 2005 by a team of astronomers led by Mike Brown at Caltech. Its discovery prompted the reclassification of Pluto as a dwarf planet.

Eris is a dwarf planet in the outer Solar System. It is the most massive and second-largest dwarf planet in the Solar System after Pluto. Eris was discovered in 2005 by Mike Brown and his team at Caltech. It was initially classified as a planet, but in 2006, the International Astronomical Union (IAU) reclassified it as a dwarf planet.

Eris is about 1/5 the radius of Earth and has a mass that is about 27% of Pluto's mass. It has a very elliptical orbit that takes 557 Earth years to complete. Eris is currently located in the scattered disc, a region of the Solar System beyond the Kuiper Belt.

Eris has a very dark surface, with a geometric albedo of only 0.86. This means that only 14% of the sunlight that hits Eris is reflected back into space. The surface of Eris is thought to be made of ice and rock.

Eris has one known moon, Dysnomia. Dysnomia was discovered in 2006 and is about 1/8 the diameter of Eris. It has an orbital period of 16 days.

Eris is a very interesting object in the Solar System. It is the largest object discovered in the Solar System since Pluto in 1930. Eris' discovery led to the reclassification of Pluto as a dwarf planet. Eris is a reminder that there is still much to learn about the Solar System.

Here are some of the distinguishing features of Eris:

• It is the most massive dwarf planet in the Solar System.
• It has a very elliptical orbit that takes 557 Earth years to complete.
• It is currently located in the scattered disc, a region of the Solar System beyond the Kuiper Belt.
• It has a very dark surface, with a geometric albedo of only 0.86.
• It has one known moon, Dysnomia.
• It is a very interesting object in the Solar System.