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Objects Encyclopedia Entry 1777475884

** The **Kuiper Belt Object (KBO) 2007 OR10** is a small, icy celestial body located in the outer reaches of the **Solar System**, providing valuable insights into the formation and evolution of the **Kuiper Belt**. ## Overview The **Kuiper Belt** is a region of the **Solar System** that contains a large number of small, icy bodies, including dwarf planets, asteroids, and comets. **Kuiper Belt Objects (KBOs)** are some of the most primitive and enigmatic objects in our **Solar System**, offering a glimpse into the early days of planetary formation. **2007 OR10**, discovered in 2007, is one of the largest and most massive KBOs known to date. This object is of great interest to astronomers and planetary scientists due to its unique composition and orbital characteristics. Located approximately 68 astronomical units (AU) from the **Sun**, **2007 OR10** is a small, icy world with a diameter of approximately 710 kilometers (440 miles). Its surface is thought to be composed primarily of water ice, with possible additional components such as methane and ammonia ices. The object's low albedo (reflectivity) suggests that its surface may be covered in a layer of dark material, possibly the result of solar radiation processing. ## History/Background The discovery of **2007 OR10** was announced in 2007 by a team of astronomers led by Michael Brown of the **California Institute of Technology (Caltech)**. The object was detected using the **Palomar Observatory** in California, and its orbit was determined using a combination of observations from the **Hubble Space Telescope** and ground-based telescopes. Since its discovery, **2007 OR10** has been the subject of numerous studies, including spectroscopic and photometric observations. ## Key Information * **Orbital Characteristics:** **2007 OR10** has a highly eccentric orbit, which takes it from 30 to 70 AU from the **Sun** over a period of approximately 550 years. * **Composition:** The object's surface is thought to be composed primarily of water ice, with possible additional components such as methane and ammonia ices. * **Size:** **2007 OR10** has a diameter of approximately 710 kilometers (440 miles), making it one of the largest KBOs known to date. * **Albedo:** The object's low albedo (reflectivity) suggests that its surface may be covered in a layer of dark material, possibly the result of solar radiation processing. ## Significance The study of **2007 OR10** and other KBOs provides valuable insights into the formation and evolution of the **Kuiper Belt**. These objects are thought to be remnants from the early days of planetary formation, and their study can help scientists understand the processes that shaped the **Solar System**. Additionally, the discovery of **2007 OR10** and other large KBOs has implications for the search for **Planet 9**, a hypothetical large planet thought to be lurking in the outer reaches of the **Solar System**. INFOBOX: - **Name:** 2007 OR10 - **Type:** Kuiper Belt Object (KBO) - **Date:** Discovered in 2007 - **Location:** Outer reaches of the **Solar System** (approximately 68 AU from the **Sun**) - **Known For:** One of the largest and most massive KBOs known to date TAGS: **Kuiper Belt Object (KBO)**, **Solar System**, **Kuiper Belt**, **Astronomy**, **Planetary Science**, **Space Exploration**, **Comets**, **Asteroids**, **Dwarf Planets**, **Planet 9**