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Feb 28, 2019 · The Main Asteroid Belt is at the boundary of the inner and outer solar system. It marks a transition region from the rocky volatile-poor inner terrestrial planets to the outer gaseous and icy giant planets.
The asteroid belt is a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies called asteroids or minor planets .
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This plot shows the location of the main belt with respect to the planets and the Sun as well as the orbital structure of asteroid inclinations and number…
In asteroid: Distribution and Kirkwood gaps. …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.
From the viewpoint of planet formation in the Solar System, Main Belt asteroids are the remnants of the so-called planetesimal population, the building bricks of planets that formed ubiquitously all over the Solar Nebula.
Main-belt Asteroids (MBA) are objects orbiting between Mars and Jupiter in the main portion of the asteroid belt. There are 1,157,490 Main-belt Asteroids in this database out of 1,302,506 total, accounting for 88.9% of objects.
