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.
At 5.4 kilometers in diameter, the largest known potentially hazardous asteroid is Toutatis. By comparison, asteroids that populate the main asteroid belt between Mars and Jupiter, and pose no threat to Earth, can be as big as 940 kilometers (about 583 miles) across. How is an Asteroid Orbit Calculated? An asteroid's orbit is computed by finding the elliptical path about the sun that best fits the available observations of the object.