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How many NEOs have been discovered so far?
As of 17 December 2001, 1706 NEOs have been discovered. 551 of these NEOs are asteroids of diameter approximately 1 km or larger. 357 NEOs have been classified as potentially hazardous asteroids of which 104 are estimated as greater than 1 km in diameter. 427 new NEos have been discovered in the period between 1 January 2001 and 17 December 2001 which shows an increasing rate of discovery. There are currently 44 identified Near Earth Comets (NECs).
More information on the discovery rate of Near Earth Objects can be found at NASA's NEO Program and in our table of close approaches.
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