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Key terms: earth asteroid orbit objects impact neos au nasa comets meters fh diameter detect kilometer tnt tunguska palermo observations sudan aten amor potentially hitting closest near earth telescope collision predicted meteoroid greater than solar system jupiter torino scale ellipse million years exploded apollo asteroid kilometres perihelion tunguska event observatory palermo scale asteroid belt impact probability potentially hazardous these resonances close approaches astronomical unit approximately once average orbital radii Search external links cited by footnotes on Wikipedia page Near-Earth object: |
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