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davepamn | October 12, 2009 12:57 AM | in Science & Mathematics

What is the Apophis Keyhole as identified by NASA?

Demostrate how the keyhole predicts Apophis impact probability

| Report Report

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BEST ANSWER chosen by asker | ghanan20003000 | October 12, 2009 01:23 AM

Astronomers are predicting that Apophis will pass through a space nearly 600 meters across, which would set a future impact on 2036.

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Additional observations of the trajectory of Apophis revealed the keyhole would likely be missed, and on August 5, 2006 Apophis was lowered to a Level 0 on the Torino Scale. As of October 19, 2006, the impact probability for April 13, 2036, was calculated as 1 in 45,000. An additional impact date in 2037 was also identified; the impact probability for that encounter was calculated as 1 in 12.3 million. Most experts agree that Apophis warrants closer scrutiny, and to that end, in February 2008 the Planetary Society awarded $50,000 in prize money to companies and students who submitted designs for space probes that would put a tracking device on or near the asteroid.
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