how are these belts classified?
Classified according similar orbital elements and similar spectral features
Asteroid belt
Approximately one-third of the asteroids in the asteroid belt are members of an asteroid family. These share similar orbital elements, such as semi-major axis, eccentricity, and orbital inclination as well as similar spectral features, all of which indicate a common origin in the breakup of a larger body.
where are most asteroids located in our solar system Asteroid belt which is located roughly between the orbits of the planets Jupiter and Mars what is this belt? It is a torus-shaped region in the Solar System what is this system mentioned above? The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly how are the above mentioned belts formed? A hypothesis to the asteroid belt creation is that in general, in the Solar System, a planetary formation is thought to have occurred via a process comparable to the long-standing nebular hypothesis: a cloud of interstellar dust and gas collapsed under the influence of gravity to form a rotating disc of material that then further condensed to form the Sun and planets. what are the physical features of the latter above mentioned planet? Mars is approximately half the diameter of Earth, having about 15% of Earth's volume and 11% of Earth's mass, resulting in about 38% of Earth's surface gravity, the  red-orange appearance of the Martian surface is caused by iron oxide, or rust can you explain the air that surrounds the planet? Methane has been detected in the Martian atmosphere what is the weather like here? The seasons of Mars are the most Earth-like, with equatorial summer,  winter what are the features of the above mentioned belt? Hundreds of thousands of asteroids are currently known, and the total number ranges in the millions or more, depending on the lower size cutoff, over 200 asteroids are known to be larger than 100 km,  700,000 and 1.7 million asteroids with a diameter of 1 km or more
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Asteroid belt [SEP] Families and groups
In 1918, the Japanese astronomer Kiyotsugu Hirayama noticed that the orbits of some of the asteroids had similar parameters, forming families or groups. Approximately one-third of the asteroids in the asteroid belt are members of an asteroid family. These share similar orbital elements, such as semi-major axis, eccentricity, and orbital inclination as well as similar spectral features, all of which indicate a common origin in the breakup of a larger body. Graphical displays of these elements, for members of the asteroid belt, show concentrations indicating the presence of an asteroid family. There are about 20 to 30 associations that are almost certainly asteroid families.