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Glossary term: 소행성대

Description: 소행성대는 화성과 목성 사이에 위치하는데, 왜소행성인 세레스와 주로 암석으로 이루어진 수많은 작은 소행성들이 공전하고 있는 영역입니다. 소행성대는 태양계 내 다른 소행성들, 즉 근지구 소행성이나 트로이군 소행성과 구분하기 위해 주소행성대라고도 합니다.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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The asteroid Ceres, roughly spherical with a grey surface, many craters, some of which reveal white subsurface water ice.

Ceres

Caption: True-colour image of the asteroid Ceres acquired by the spaceprobe Dawn in May 2015, at a distance of 13641 km. The prominent, bright crater at right is Haulani. The smaller bright spot to its left is exposed on the floor of Oxo. Ejecta from these impacts appears to have exposed bright material, probably water ice.
Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Justin Cowart

License: CC-BY-2.0 Creative Commons 저작자표시 2.0 일반 icons


The asteroid Ida is grey and shaped like a potato with lots of shallow craters. It's moon Dactyl is 40 times smaller

Ida and Dactyl

Caption: This picture of the asteroid Ida with its satellite Dactyl was taken by the Galileo space probe in August 1993 from a range of 10,870 kilometers (6,755 miles). Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter. This image is proof that asteroids like the 56 km large Ida can possess their own moons.
Credit: NASA/JPL credit link

License: PD Public Domain icons