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Objects Encyclopedia Entry 1777142044

** The **Kuiper Belt Object (KBO) 2004 DW** is a small, icy celestial body located in the outer reaches of the **Solar System**, providing valuable insights into the formation and evolution of our cosmic neighborhood. ## Overview The **Kuiper Belt** is a vast, doughnut-shaped region of icy bodies, rocky objects, and other small celestial entities beyond the orbit of **Neptune**. This region is thought to be a reservoir of small bodies that were left over from the formation of the **Solar System**. One such object, **2004 DW**, was discovered on February 26, 2004, by **Marc Buie** using the **Palomar Observatory** in California, USA. This **Kuiper Belt Object (KBO)** is a fascinating example of the diverse and complex nature of our **Solar System**. **2004 DW** is a small, irregularly shaped object with a diameter of approximately 140 kilometers (87 miles). Its surface is composed primarily of water ice, with possible presence of darker organic material. The object's highly eccentric orbit takes it from a perihelion (closest point to the **Sun**) of about 28 astronomical units (AU) to an aphelion (farthest point from the **Sun**) of about 45 AU. This unusual orbit suggests that **2004 DW** may have been perturbed by the gravitational influence of **Neptune** or other nearby objects. ## History/Background The discovery of **2004 DW** marked a significant milestone in the exploration of the **Kuiper Belt**. Prior to this, only a handful of KBOs had been discovered, and their characteristics were not well understood. The discovery of **2004 DW** and subsequent observations have helped scientists to better understand the population of small bodies in the outer reaches of the **Solar System**. The object's unusual orbit and composition have also provided insights into the formation and evolution of the **Kuiper Belt**. ## Key Information - **Orbital Period:** approximately 1,100 years - **Perihelion:** 28 astronomical units (AU) - **Aphelion:** 45 AU - **Diameter:** approximately 140 kilometers (87 miles) - **Surface Composition:** primarily water ice, with possible presence of darker organic material - **Discovery Date:** February 26, 2004 - **Discoverer:** Marc Buie ## Significance The discovery of **2004 DW** has significant implications for our understanding of the **Solar System**. The object's unusual orbit and composition provide insights into the formation and evolution of the **Kuiper Belt**, which is thought to be a reservoir of small bodies that were left over from the formation of the **Solar System**. The study of KBOs like **2004 DW** can also provide valuable information about the early history of our cosmic neighborhood and the potential for life beyond **Earth**. INFOBOX: - **Name:** 2004 DW - **Type:** Kuiper Belt Object (KBO) - **Date:** February 26, 2004 - **Location:** Outer reaches of the Solar System - **Known For:** Unusual orbit and composition, providing insights into the formation and evolution of the Kiper Belt TAGS: **Kuiper Belt**, **Solar System**, **Astronomy**, **Space Exploration**, **Kuiper Belt Objects**, **Small Bodies**, **Water Ice**, **Organic Material**, **Neptune**, **Palomar Observatory**