That is, semimajor axis must lie between the min and max values of a that you specify, eccentricity must at the same time lie between the min and max values of e , and so on. You MUST specify a range for a . Please do not perform searches that will return thousands of asteroids. You'll only be able to see the first 500 no matter what, anyway, so be courteous to others and don't tie up our server with large searches. When in doubt, start very small and work upwards.
Elements are heliocentric.
The number of objects in the database used by this utility is currently 108,435. This data has been similarly converted to dbase format and joined to the elements database. The density of asteroids in this region is very high, so on a first search the min and max values of a should differ by less than 0.005 or else the search can try to return more than 500 asteroids. For an overview of where the asteroids are, click on the thumbnail image at right to see a histogram of asteroid semimajor axes. Generally, asteroid diameters are poorly known, if at all, and very few asteroids have directly-measured diameters.