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Date: 2007-12-13 18:28:56Celestial mechanics Aten asteroids 99942 Apophis Planetary defense Steven J. Ostro Near-Earth object NEODyS Asteroid Cosmic distance ladder Astronomy Planetary science Space | doi:[removed]j.icarus[removed]Add to Reading ListSource URL: neo.jpl.nasa.govDownload Document from Source WebsiteFile Size: 1,35 MBShare Document on Facebook |
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