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Location of the Asteroid Belt between Mars and Jupiter

  1. May 19, 2009 #1
    There is an Asteroid Belt between Mars and Jupiter. I have a few questions about it. Where does it start and end (Radius from the Sun)?
    Also, the Right Ascensions and Declinations of the extents of the belt or if it is continuous around the sun?

    I know that some of the larger asteroids and Ceres have elliptical orbits so humor me.

    Some websites would be helpful.
  2. jcsd
  3. May 20, 2009 #2


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    The 'main' asteroid belt is mostly between the orbits of mars and jupiter. It is thought to be the remnants of a planet that was torn apart, or was unable to form in the early solars system. For further discussion see
  4. May 20, 2009 #3
    Does the main asteroid belt have a breath and width in RA and DEC?
  5. May 21, 2009 #4


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    It lies mostly within the ecliptic.
  6. May 21, 2009 #5
    But how big and the location of the debris in the ecliptic. Is it like the rings of Saturn or is it a larger dispersion.
  7. May 21, 2009 #6


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    It is, in fact, dispersed pretty uniformly about its orbit.

    Of course, the asteroid belt, being a swarm of independently orbiting bodies, does not have "hard" width but according to http://www.bnsc.gov.uk/4749.aspx [Broken] it is approximately 180 million km in width.
    Last edited by a moderator: May 4, 2017
  8. May 24, 2009 #7
    I think the Main Belt is defined as being between 2.0 AU and 3.5 AU. Outside of that and objects fall into different categories. Nature, of course, is under no obligation to fit our preconceptions.
  9. May 24, 2009 #8
    I answered my own question about the asteroids in the Declinaton dircection using this site:


    This site shows all the major dwarf planets and asteroids. I just looked at all the inclinations,i, for a semi-major axis,a, between 2 and 3.5AU and found the largest i to be about 64deg for about the first 1000 or so averaging between 10-30deg.
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