Objects Encyclopedia Entry 1782518766
Space & Astronomy

Objects Encyclopedia Entry 1782518766

Captain Cosmos
Space & Astronomy Editor
0 views 2 min read Jun 27, 2026

Objects Encyclopedia Entry 1782518766

SUMMARY: The Kuiper Belt Object (KBO) 2007 OR10 is a small, icy celestial body located in the outer reaches of the Solar System, offering insights into the formation and evolution of our cosmic neighborhood.

Overview

Located approximately 70 astronomical units (AU) from the Sun, 2007 OR10 is a Kuiper Belt Object (KBO), a class of small, icy bodies that inhabit the outer reaches of the Solar System. These enigmatic objects are remnants from the early days of the Solar System's formation, providing a window into the past. With a highly eccentric orbit, 2007 OR10 takes about 1,100 years to complete one rotation around the Sun.

History/Background

The discovery of 2007 OR10 was announced in August 2007 by astronomers using the Palomar Observatory in California. The object was first detected on July 17, 2007, by a team led by Mike Brown, a renowned astronomer known for his work on Kuiper Belt Objects. The discovery of 2007 OR10 was significant, as it provided new insights into the composition and structure of these distant, icy bodies.

Key Information

Physical Characteristics:

- Diameter: Approximately 710 kilometers (440 miles)
- Composition: Primarily composed of water ice, with possible presence of darker organic material
- Surface: Likely composed of a mixture of water ice and darker organic material, with possible presence of methane and ammonia

Orbital Characteristics:

- Orbit: Highly eccentric, with a perihelion (closest point to the Sun) of approximately 33 AU and an aphelion (farthest point from the Sun) of approximately 110 AU
- Rotation Period: Approximately 45 hours
- Orbital Period: Approximately 1,100 years

Significance

The discovery of 2007 OR10 has significant implications for our understanding of the Solar System's formation and evolution. The object's highly eccentric orbit and composition provide insights into the processes that shaped the outer reaches of the Solar System. Additionally, the study of 2007 OR10 and other Kuiper Belt Objects has led to a greater understanding of the Solar System's early days, including the formation of the Solar Nebula and the migration of the gas giants.

INFOBOX:
- Name: 2007 OR10
- Type: Kuiper Belt Object (KBO)
- Date: July 17, 2007 (discovery)
- Location: Outer reaches of the Solar System, approximately 70 AU from the Sun
- Known For: Highly eccentric orbit and composition, providing insights into the formation and evolution of the Solar System

TAGS: Kuiper Belt Object, Solar System, Kuiper Belt, Small Body, Icy Body, Asteroid, Comet, Space Exploration, Astronomy