The European Space Agency monitors 10.000 asteroids – only 411 could be dangerous

The ‘ asteroid ‘ counter of the European Space Agency touched 10.000; many are the asteroids that skim over ‘ the Earth with gasps more or less close together.  Of all the asteroids, the ones that pose a potential danger to our planet are 411.  To categorize the asteroid number 10.000 was the Coordination Centre Near-Earth object (Near-Earth Object, Neo) which is located in Italy, at the center of the Space Agency Esrin.



Only about 411 of the 10.000 asteroids were defined as dangerous -The ten-thousandth asteroid belongs, like the others, of the population of ‘ Near-Earth asteroids ‘, i.e. those who can be dangerous, if even if they do not collide with our planet.  At the moment they are only about 411 of the 10.000 asteroids that are defined as risky and the evaluation of the danger is made on a precautionary basis.  Once the orbit had been scrutinized for a few of the asteroids, the probability of a real endanger is almost zero per cent for an asteroid to collide with Earth.  Only 10% of them (about a thousand asteroids) have a size greater than one kilometer.

The European Coordination Centre aims to enhance the contribution of the old continent to this new enterprise: discover, characterize and control these objects, which may be ‘ potential assumed impactor to the population ‘ of Earth as evidenced by the ‘ superbolide ‘ that exploded in the skies of the Russian city of Chelyabinsk last February.  There are only two data centers in the world where is centralized all information concerning the discoveries of new asteroids by astronomical observers.  The first is that, at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, and the other is the ESA Centre.

Great developments in the discovery of these celestial bodies. The 10.000 asteroids observed is an important milestone that testifies how much there is still to do for the progress of astronomy in this field.  Figuring that observation techniques dedicated to the discovery of these celestial bodies have recently made great strides just think that throughout the last century, from the discovery of the first asteroid, 433 Eros, which took place on 13 August 1898, in 2000, the number of known objects was about one thousand.  To get to that figure today we should thank to networks of wide-field telescopes and high sensitivity that scan the skies every night looking for faint bright dots moving between the constellations.

ESA is able to make observations independently- ‘ Neo Centre of ESA is a merit of European countries – says Central Manager, Ettore Perozzi, and proves that onto the old continent, in collaboration with the Americans, we are able to make observations independently. In November 2013, will be launched an European satellite called Gaia, which will have the task of cataloging, with great precision as it never had before, all the stars of heaven ‘.  Every picture ‘ will be analyzed in real-time and if an object appears in the image due to an asteroid, it will alert the network of telescopes on the ground to track, follow it and parse it.  This will increase the number of asteroids discovered, and then there will be a calm atmosphere on Earth knowing precisely what goes around ‘.

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