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near-earth object |
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near-earth object [‚nir ′ərth ‚äb‚jekt] (astronomy) An asteroid or comet whose orbit takes it within 1.3 astronomical units of the sun. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Several detection efforts are currently under way, trying to meet a federal mandate of finding 90 percent of near-Earth objects larger than a kilometer (0. ``Its an exciting event because usually when we find out about near-Earth objects, they have already passed, and are faint in the sky,'' Cook said. It's the third binary asteroid among near-Earth objects imaged by radar. |
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