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Asteroid in Earths Orbit was Closely Monitored
for a potential collision in 2013

Asteroid did not collide with Earth Satellites - Near Miss
 

asteroid earths orbitNASA Television provided commentary on Friday, Feb. 15, during the flyby of a small near-Earth asteroid named 2012 DA14. It passed within 17,200 miles of earth and did not strike any man made satellites.

NEWS ARCHIVED BELOW
February 15th, 2013 - A 150-foot asteroid orbiting Earth called 2012 DA14 will pass within 14,000 to 17,000 miles of a collision with earth. It will fly past and UNDER the thousands of man-made satellites orbiting our planet.


It was first truly recognized, seven days after it passed the Earth on February 16, 2012.
On February 23, 2012,
the OAM Observatory, La Sagra in Spain reported that the asteroid passed within1,620,000 miles from Earth.

The preliminary orbit shows that 2012 DA14 has an Earth-Like orbit with a period of 366 days. This current close approach to Earth will change its orbital path and may increase the chance of a future impact. NASA's data says it will miss the earth this time (but no mention of a satellite hit)

NASA expert Dr. David Dunham said, "The Earth’s gravitational field will alter the asteroid’s path significantly. Further calculation is required to estimate the threat of collision and work out how to avert possible disaster,” “The asteroid may break into small pieces, or several large lumps and burn up in the atmosphere. The type of asteroid and its mineral structure will be determined by spectral analysis. This will help predict its behavior and what should be done to prevent a future potential threat.”
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Over the last few millions of years the Earth has had many impacts from meteors and asteroids. Scientists have confirmed 172 locations on the Earth as "impact structures". They range in diameter from a few feet wide up to about 180 miles in diameter. They range in age from recent times to more than two billion years ago.

asteroid barringer crater< BARRINGER CRATER IN ARIZONA
About 40,000 years ago
a nickel-iron meteorite hit Earth near Flagstaff, Arizona.
The width of the object was about 150 ft - similar in size as 2012 DA14.
The force generated by the impact was equal to the explosion of 20
MILLION tons of TNT. The Atomic Bomb Dropped on Japan was Equal to 20 THOUSAND Tons of TNT.
A 150 foot wide asteroid impact would equal 2,000 atomic bombs
The crater is 600 feet deep and 4,000 feet wide. The impact produced circular seismic shock waves in the surrounding earth which reformed the Earth. There was a 480 mile radius of the shock wave which altered the topography. If it struck today near a metropolitan city...within the shock wave most tall buildings would shake and some would topple.

In observing asteroid activity, researchers recently identified about 4,700 near Earth projectiles that are "potentially hazardous" if they strike our planet.

If the entire asteroid crashed into Earth, the impact will be as hard as in the Tunguska blast in 1908 knocked down trees over an area of 850 square miles in Siberia.

The difference between asteroids and meteorites. An asteroid is always in outer space. Once it enters an atmosphere it becomes a meteor, then it is called a meteorite when it hits the ground. Asteroids and Meteors are typically made of the same basic materials, which are metal and rock.


There are approximately 3,000 satellites operating in Earth orbit. Geosynchronous orbit is known as the Clarke orbit. This is essentially a stationary orbit located at an altitude of 22,250 miles above sea level.

6,500 The number of satellites that have been sent up since Sputnik.
994 The number of operational satellites orbiting Earth.
3,000 The total number of satellites orbiting Earth (including those that are now defunct).
16,000 The number of pieces of debris larger than 10cm orbiting Earth in the area where most satellites are based

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