What is the risk that a hidden asteroid in a stealth-path will hit the earth of December 21, 2012?
India Daily Technology Team
Jan. 3, 2007
http://www.indiadaily.com/editorial/15008.asp

There are thousands of asteroids in hidden orbits that scientists cannot observe. Many of them were seen after they kissed the earth and went by in galactic scale. The known danger from the asteroid is in 2028. But some scientists are watching the possibilities that a hidden asteroid in a stealth-path can destroy human civilization by hitting the earth on December 21, 2012. This is the same date when Mayans predicted the end of the world.

The probability that a ‘50-300 Meter (150-1000 Feet) Diameter Asteroid Hitting the Earth’ is 1 in 250. It can actually happen any time. The estimated fatalities would be 5000. The probability that a ‘1.5 Kilometer (1 Mile) Diameter Asteroid Hitting the Earth’ is 2 in 1 million with estimated fatalities of 1.5 billion. A similar catastrophe by a ‘10 Kilometer (6 Mile) Diameter, or greater, Asteroid Hitting the Earth’ has a probability of 1 in 100 million with 10 Billion fatalities.

Some scientists are concerned that Mayans in their time could see some hidden asteroid paths that are stealth today. The alignment of Sun, Moon and the earth on December 21, 2012 is significant because gravitational release of hidden asteroids can take place. The probabilities shown above are in normal circumstances.

However, the probabilities go thirty times higher during galactic alignments. This means that if there is a lose asteroid in a stealth path, it can deviate from its path and come towards the earth. The biggest problem with the terrestrial science is that we cannot see these stealth asteroids till they hit us or go past us.