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Feb 28, 2019 · The Main Belt: A Gateway to the Formation and Early Evolution of the Solar System. Workshop, Sardinia, Italy | June 4-7, 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 majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to complete a full circuit of the Sun. Asteroids have historically been observed from Earth; the Galileo spacecraft made the first close-up observation of an asteroid.
Location of the main belt 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 density of objects (yellow represents the highest number density, blue the lowest). Figure from DeMeo and Carry (2014).
In order to identify present-day members of the main belt that may have had very different orbits in the relatively recent past (\(\sim \) 400 yr ago), we retrieved (from JPL’s Horizons via the astroquery.jplhorizons package pointed out above) the heliocentric osculating orbital elements of each known member of the main belt for two epochs (t and \(t_{0}\)): 2459600.5 JD TDB (2022-Jan-21.0 ...
The Simple English Wiktionary has a definition for: asteroid belt. The asteroid belt or main belt is a ring of small and large rocks and dust between the orbits of Mars and Jupiter. The biggest object in the asteroid belt is Ceres, a dwarf planet. The Kirkwood gaps separate the asteroid belt into several groups.
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Summary. 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. Over the last years evidence has grown that planetesimals formed big from the gravitational collapse of a local ...
