Quote:
Originally Posted by Werfer
about asteroid TU24 is real, hype or hoax, but what would be the likely result of an impact of a 300m asteroid on the Moon?
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2007 TU24 is real. The future events depicted are someone's fantasy.
See
Bad Astronomy Blog: Asteroid to miss Earth January 29
Lifted from the Internet's wastebasket (Google cache) from back when 2007 TU24's path wasn't known well enough, it was listed as a risk (and is not, now), at the
NEO Program :
Quote:
[Old data]
2007 TU24
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -5.45
Palermo Scale (cumulative) -5.45
Impact Probability (cumulative) 3.9e-08
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Asteroid Apophis is roughly the same size. Check out the impact effects described in
Wikipedia.
Quote:
NASA initially estimated the energy that Apophis would have released if it struck Earth as the equivalent of 1480 megatons of TNT. A more refined later NASA estimate was 880 megatons. The impacts which created the Barringer Crater or caused the Tunguska event are estimated to be in the 10-20 megaton range. The 1883 eruption of Krakatoa was the equivalent of roughly 200 megatons.
The exact effects of any impact would have varied based on the asteroid's composition, and the location and angle of impact. Any impact would have been extremely detrimental to an area of thousands of square kilometres, but would have been unlikely to have long-lasting global effects, such as the initiation of an impact winter.
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People would be wise to evacuate the region it might strike (or all coastal regions near the water it might strike). They can return some time later and make a huge profit off the new tourist attraction.