| 2004 Fu162 |
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| aten asteroids | |
| meteoroids | |
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(also written ''' on March 31 2004 , or 2.02 Earth radii from the centre of the Earth. This set a record for the closest known approach to date. The discovery was not announced until August 22 , 2004 . By comparison, Geostationary satellites orbit at 5.6 Earth radii and GPS satellites orbit at 3.17 Earth radii from the centre of the Earth. It was only observed four times in the space of 44 minutes and could not be followed up, and no pre-discovery images have been found. Nevertheless, its calculated orbit is considered "quite determinate". The diameter is estimated to be about six metres, which means it would have burned up before striking the ground in the case of an Impact . is estimated to be only 6 meters in diameter. Objects under 50 meters in diameter are generally classified as a Meteoroid instead of an Asteroid . SEE ALSO REFERENCES
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