Results for "**International Astronomical Union**"
Objects Encyclopedia Entry 1775324344
** The **Kuiper Belt Object (KBO)** 2007 OR10, also known as Eris, is a dwarf planet located in the outer reaches of the **Solar System**, beyond the orbit of **Neptune**. ## Overview The **Kuiper Belt** is a region of icy bodies, asteroids, and other small celestial objects that extends from about 30 to 55 astronomical units (AU) from the **Sun**. Within this vast expanse, a multitude of **Kuiper Belt Objects (KBOs)** have been discovered, each with its unique characteristics. One such fascinating object is 2007 OR10, also known as Eris. This dwarf planet was discovered on July 26, 2007, by the Palomar Observatory in California, USA. Initially thought to be the tenth **Pluto**, it was later classified as a dwarf planet due to its size and orbital characteristics. Eris is a fascinating object that has contributed significantly to our understanding of the **Solar System**. Its discovery sparked a debate about the definition of a planet, ultimately leading to the reclassification of Pluto as a dwarf planet. This event marked a significant shift in our understanding of the **Solar System** and its many mysteries. ## History/Background The discovery of Eris is a fascinating story that began with the observations of the **Palomar Observatory**. The observatory's 1.2-meter Schmidt telescope was used to scan the skies for objects in the **Kuiper Belt**. On July 26, 2007, a team of astronomers led by Mike Brown, Chad Trujillo, and David Rabinowitz discovered a small, icy object with an unusual orbit. Initial observations suggested that the object was similar in size to Pluto, leading to speculation that it might be the tenth **Pluto**. However, further observations revealed that Eris was slightly larger than Pluto, with a diameter of approximately 2,326 kilometers (1,445 miles). This discovery sparked a heated debate about the definition of a planet, with some arguing that Eris should be considered the tenth planet. Ultimately, the **International Astronomical Union (IAU)** redefined the term "planet" in 2006, classifying Eris as a dwarf planet due to its size and orbital characteristics. ## Key Information Eris is a fascinating object with several unique characteristics. Here are some key facts about this dwarf planet: * **Diameter:** Approximately 2,326 kilometers (1,445 miles) * **Mass:** Estimated to be around 16% of the mass of **Pluto** * **Orbit:** Eris has a highly eccentric orbit, taking it as close as 37.8 AU from the **Sun** and as far as 95.6 AU from the **Sun** * **Surface:** Eris has a surface composed primarily of water ice, with possible tholins (complex organic molecules) present * **Moons:** Eris has one known moon, Dysnomia, which was discovered in 2005 ## Significance The discovery of Eris has had a significant impact on our understanding of the **Solar System**. Its discovery sparked a debate about the definition of a planet, ultimately leading to the reclassification of Pluto as a dwarf planet. This event marked a significant shift in our understanding of the **Solar System** and its many mysteries. Eris is also an important object for studying the formation and evolution of the **Solar System**. Its highly eccentric orbit suggests that it may have formed in a different region of the **Solar System**, possibly in the **Oort Cloud**. Studying Eris and other KBOs can provide valuable insights into the early history of the **Solar System** and the formation of the planets. INFOBOX: - **Name:** 2007 OR10 (Eris) - **Type:** Dwarf Planet - **Date:** July 26, 2007 - **Location:** **Kuiper Belt** - **Known For:** Discovery of a dwarf planet that sparked a debate about the definition of a planet TAGS: **Kuiper Belt Object**, **Dwarf Planet**, **Solar System**, **Pluto**, **International Astronomical Union**, **Orbital Characteristics**, **Surface Composition**, **Moons**
Space & AstronomyObjects Encyclopedia Entry 1779236344
** A newly discovered **Asteroid** with a unique orbit and composition, offering insights into the formation and evolution of our solar system. **CONTENT:** ## Overview The **Objects Encyclopedia Entry 1779236344**, designated as **Asteroid 1779236344**, is a recently discovered **Asteroid** located in the outer reaches of our solar system. This **Asteroid** has garnered significant attention from the scientific community due to its unusual orbit and composition, which provide valuable information about the formation and evolution of our solar system. The discovery of **Asteroid 1779236344** was announced in a joint press release by the **International Astronomical Union** (IAU) and the **European Space Agency** (ESA) on March 15, 2023. ## History/Background The discovery of **Asteroid 1779236344** is attributed to a team of astronomers from the **European Southern Observatory** (ESO) using the **Very Large Telescope** (VLT) in Chile. The team, led by Dr. Maria Rodriguez, conducted a thorough survey of the outer solar system using advanced telescopic equipment and sophisticated software. The **Asteroid** was initially detected on February 10, 2023, and subsequent observations confirmed its unique characteristics. The discovery of **Asteroid 1779236344** marks a significant milestone in the ongoing quest to understand the formation and evolution of our solar system. ## Key Information **Asteroid 1779236344** is a relatively small **Asteroid**, measuring approximately 10 kilometers in diameter. Its orbital path is highly eccentric, taking it from a distance of 30 astronomical units (AU) from the Sun to a perihelion of 20 AU. This unusual orbit suggests that **Asteroid 1779236344** may have originated from the outer reaches of the solar system, potentially from the **Kuiper Belt** or the **Oort Cloud**. The **Asteroid**'s surface composition is primarily composed of water ice and dark organic material, which is consistent with the formation of **Asteroids** in the outer solar system. ## Significance The discovery of **Asteroid 1779236344** has significant implications for our understanding of the solar system's formation and evolution. The **Asteroid**'s unique orbit and composition provide valuable insights into the processes that shaped the outer solar system. Furthermore, the discovery of **Asteroid 1779236344** highlights the importance of continued astronomical research and exploration, which can lead to new discoveries and a deeper understanding of the universe. **INFOBOX:** - Name: **Asteroid 1779236344** - Type: **Asteroid** - Date: **February 10, 2023** (discovery) - Location: **Outer reaches of the solar system** - Known For: **Unique orbit and composition** **TAGS:** **Asteroid**, **Solar System**, **Formation and Evolution**, **Kuiper Belt**, **Oort Cloud**, **Water Ice**, **Organic Material**, **European Space Agency**, **International Astronomical Union**