where are s-type asteroids typically found in the solar system ​
Asteroid belt S-type (silicate-rich) asteroids are more common toward the inner region of the belt, within 2.5 AU of the Sun.[53][54] The spectra of their surfaces reveal the presence of silicates and some metal, but no significant carbonaceous compounds. This indicates that their materials have been significantly modified from their primordial composition, probably through melting and reformation. They have a relatively high albedo and form about 17% of the total asteroid population.
Asteroid Near-Earth asteroids, or NEAs, are asteroids that have orbits that pass close to that of Earth. Asteroids that actually cross Earth's orbital path are known as Earth-crossers. As of June 2016[update], 14,464 near-Earth asteroids are known[17] and the number over one kilometer in diameter is estimated to be 900–1,000.