This asteroid belt is also called the main asteroid belt or main belt to distinguish it from other asteroid populations in the Solar System. [1] The asteroid belt is the smallest and innermost known circumstellar disc in the Solar System.

2025年1月21日 · Most of those orbits, in turn, have semimajor axes, or mean distances from the Sun, between 2.06 and 3.28 AU, a region called the main belt. The mean distances are not uniformly distributed but exhibit population depletions, or “gaps.” Those so-called Kirkwood gaps are due to mean-motion resonances with Jupiter ’s orbital period.

2014年2月1日 · A decade ago, a few rogue asteroids were known to be “polluting” the main asteroid belt: while located in the main belt, their compositions indicated that they had formed elsewhere in the Solar System. But now, as compositions have been measured for more and smaller asteroids, it has became apparent that the asteroid belt is comprised of a ...

2024年9月10日 · The asteroid belt is a torus-shaped region between Mars and Jupiter, spanning 2.1 to 3.3 AU from the Sun. The belt contains millions of rocky and metallic objects of varying sizes. However, most of the region is empty space.

2017年5月5日 · Most of these objects, called planetoids or asteroids — meaning "star-like" — orbit between Mars and Jupiter in a grouping known as the main asteroid belt. The main asteroid belt lies more...

To explain the compositional meaning of asteroid reflectance spectra and color data, we can treat the Asteroid Belt as a series of zoned geologic units, starting at the outer zones of the main belt and working inward toward the Sun. The outer asteroid belt is …

The Asteroid Belt consists of tens of thousands of asteroids orbiting typically beyond 1.3 AU from the Sun at perihelion and out to about 4.2 AU from the Sun at aphelion. The number of Belt asteroids larger than 1 km in diameter is at least 1 million. The Belt consists of two dominant compositional classes, S type and C type, similar to stony ...

2024年9月12日 · The asteroid belt is a torus-shaped region of space between Mars and Jupiter. It spans approximately 140 million miles (225 million kilometers) in our solar system. The belt contains millions of asteroids and minor planets, ranging from small boulders to …

2001年6月21日 · Models of Solar System formation have always had a hard time explaining the mysterious asteroid belt. By injecting new life into an old myth about the origin of asteroids, astronomers may now...

Also known as the main belt, the asteroid belt is a region located between the orbits of Mars and Jupiter. Most of the asteroids in the solar system orbit the sun in this area. The Asteroid Belt Image Source