by tori b.

March 24, 2015 A-3

  • Asteroid belts were first discovered in 1801. They were formed from a planet trying to form but the formation failed. All asteroids orbit around the Sun. Our main asteroid belt is in between the inner and outer planets.
  • The average distance from the asteroid belt to the Sun is around 150 million km.
  • Mass varies from asteroid to asteroid, but the mass is larger than meteoroids.  All asteroids combined together have about 4% of the mass of the Moon.
asteroid Ida
  • The rotation period varies by the different asteroids. For example, asteroid Ida takes 4.6 hours for one full rotation.
  • Much like the rotation period, the revolution period depends upon the asteroid. Using the asteroid Ida again as and example,is=t takes Ida 4.8 Earth years to orbit around the Sun.
  • Asteroids are mostly made of rock and metal.
  • Asteroids also don't have an atmosphere.
  • An interesting fact that you may not know is that asteroids may be grouped together in the "belt" between Mars and Jupiter; they can move outside of the asteroid belt.

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