- Don Quijote (space probe)
Don Quijote is a proposed
space probe under consideration by theEuropean Space Agency , which would study the effects of impacting a spacecraft into anasteroid . The mission is intended to test whether a spacecraft could successfully deflect an asteroid on a collision course withEarth . The orbiter is being designed to last for seven years.The mission is still in the planning stages with a launch expected in 2011 [http://www.universetoday.com/am/publish/past_treasure_threat.html?342006] .
Overview
The mission will consist of two spacecraft that will execute a series of manoeuvres around a small, 500-metre (1,600-foot) asteroid.
*The first spacecraft, Sancho, will arrive at the asteroid and orbit it for several months, studying it. The orbiter will use a single
xenon ion engine .
*After a few months, the second spacecraft, Hidalgo, will hurtle toward the asteroid on a collision course. Sancho will retreat to a safe distance while Hidalgo will impact the asteroid at around 10 km/s. The impactor will sleep for most of the trip and then steer itself using optical sensors with an accuracy of 50 meters.
*Sancho will then return to its close orbit and see how much the asteroid's shape, internal structure, orbit and rotation have been affected by the impact. [http://www.esa.int/gsp/NEO/quijote/quijote.htm]
*Sancho will release the Autonomous Surface Package which will free-fall toward the asteroid for 2 hours before landing. This package will be directed towards the interior of the impact crater were it will investigate properties of the surface.Target
The ESA has identified two
near-Earth asteroid s as possible targets: mpl|2002 AT|4 and(10302) 1989 ML . A decision will be made in2007 . Neither asteroid represents a threat to Earth. [http://www.esa.int/esaCP/SEML9B8X9DE_index_0.html]Names
The mission is named after the fictional Spanish
knight from Miguel de Cervantes' renowned novel,Don Quixote , who charged against awindmill , thinking it to be a giant. Like the Don, the Hidalgo spacecraft will 'attack' an object much larger than itself, hopefully with more impressive results. 'Sancho' is named afterSancho Panza , the Don's squire, who preferred to stay back and watch from a safe distance, which is the role assigned to that probe.External links
* [http://www.esa.int/SPECIALS/NEO/SEMZRZNVGJE_0.html ESA: NEO Space Mission Preparation (overview of the mission)]
* [http://www.esa.int/esaCP/SEML9B8X9DE_index_0.html ESA News: ESA selects targets for asteroid-deflecting mission]
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