Learn what a resonator does, and why you may or may not need one for your car or truck. A resonator is an important part of your exhaust system. Learn what a resonator does, and why you may or may not need one for your car or truck. A resonator is an important part of your exhaust system.
The average distance between asteroids in the main belt is about 600,000 miles. Ceres, the largest and most massive, is 590 miles wide. It contains almost one-third of the total mass of all the asteroids.
Most orbit in the main asteroid belt between Mars and Jupiter, moving in the same direction as the planets. They range in size from the dwarf planet Eris, which has a diameter of about 2300 km, down to the size of pebbles. Sixteen have a diameter of 240 km or greater.