Objects Encyclopedia Entry 1778484184
Summary: The Kuiper Belt Object (KBO), also known as Eris, is a dwarf planet located in the outer reaches of the Solar System. It was discovered in 2005 and is one of the most significant objects in the Kuiper Belt, a region of icy bodies and small celestial objects beyond Neptune.
Overview
The Kuiper Belt Object (KBO), specifically Eris, is a fascinating celestial body that has garnered significant attention in the scientific community. Located in the outer reaches of the Solar System, Eris is a dwarf planet that is part of the Kuiper Belt, a region of icy bodies and small celestial objects beyond Neptune. The discovery of Eris in 2005 sparked a debate about the definition of a planet, leading to the reclassification of Eris and other similar objects as dwarf planets.
Eris is a relatively small object, with a diameter of approximately 2,326 kilometers (1,445 miles). It is composed primarily of rock and ice, with a surface that is thought to be composed of methane and nitrogen ices. Eris has a highly eccentric orbit, which takes it as close as 37.8 astronomical units (AU) from the Sun and as far as 95.6 AU from the Sun. One astronomical unit is the average distance between the Earth and the Sun, which is approximately 149.6 million kilometers (92.96 million miles).
History/Background
The discovery of Eris was announced on July 29, 2005, by a team of astronomers led by Mike Brown of the California Institute of Technology. The discovery was made using the Palomar Observatory in California, and the object was initially thought to be the tenth planet in our Solar System. However, further observations revealed that Eris was actually a dwarf planet, and its size and mass were not sufficient to be considered a full-fledged planet.
The discovery of Eris sparked a debate about the definition of a planet, which had been a topic of discussion among astronomers for some time. The debate ultimately led to the reclassification of Eris and other similar objects as dwarf planets, which are defined as celestial bodies that are in orbit around the Sun, have sufficient mass to assume a hydrostatic equilibrium shape, and have not cleared the neighborhood around their orbits.
Key Information
Eris is a fascinating object that has been the subject of extensive study by astronomers. Some of the key facts about Eris include:
* Orbital Period: Eris has an orbital period of approximately 557 Earth years.
* Surface Temperature: The surface temperature of Eris is estimated to be around -233°C (-391°F).
* Atmosphere: Eris has a thin atmosphere that is thought to be composed of methane and nitrogen ices.
* Moons: Eris has one known moon, called Dysnomia.
Significance
The discovery of Eris has significant implications for our understanding of the Solar System. The existence of dwarf planets like Eris suggests that the Solar System is a complex and dynamic system, with many objects that are still waiting to be discovered. The study of Eris and other dwarf planets can provide valuable insights into the formation and evolution of the Solar System, and can help us better understand the conditions that led to the formation of our own planet.
INFOBOX:
- Name: Eris
- Type: Dwarf Planet
- Date: July 29, 2005
- Location: Kuiper Belt
- Known For: Discovery of a dwarf planet and reclassification of the definition of a planet
TAGS: Kuiper Belt, Dwarf Planet, Solar System, Eris, Kuiper Belt Object, Astronomy, Space Exploration, Celestial Body, Orbital Period, Surface Temperature, Atmosphere, Moons.
