AIDA & DART

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Noch nicht ganz in trockenen Tüchern, aber immerhin grünes Licht für eine vorläufige Konstruktionsstudie:

NASA plans to test asteroid deflection technique designed to prevent Earth impact

DART would use what is known as a kinetic impactor technique - striking the asteroid to shift its orbit. The impact would change the speed of a threatening asteroid by a small fraction of its total velocity, but by doing so well before the predicted impact, this small nudge will add up over time to a big shift of the asteroid's path away from Earth.

Der Plan ist, einen kleinen Asteroiden mit einem 300 kg schweren Modul anzustoßen und seine Bahn dadurch geringfügig zu verändern.

DART = "Double Asteroid Redirection Test" ist Teil von AIDA = "Asteroid Impact and Deflection Assessment", einem Gemeinschaftsprojekt von NASA, ESA, und verschiedenen nationalen Raumfahrtagenturen, darunter auch der deutschen DLR.

Als Zielobjekt für den Kollisionstest der NASA ist die kleinere Komponente "Didymoon" des doppelten Asteroiden 65803 Didymos vorgesehen. Dieser näherte sich der Erde im Jahr 2003 bereits bis auf einen Abstand von 7,2 Millionen Kilometern, und im Jahr 2123 werden es nur noch 5,9 Millionen Kilometer sein.

The impact of the 300 kg DART spacecraft at 6.25 km/s will produce a velocity change on the order of 0.4 mm/s, which leads to a significant change in the mutual orbit of these two objects, but only a minimal change in the heliocentric orbit of the System.


 

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Cash crunch for anti-Armageddon asteroid mission

Europe urged to reconsider pullout from 'Armageddon' asteroid mission

Europe's contribution, to send a small craft close to the action to measure the crash and its impact, suffered a setback when space ministers rejected a 250-million-euro ($300-million) funding request last December.

The project was called AIM, for Asteroid Impact Mission.

At the meeting in the Latvian capital, European scientists proposed an altered, slightly cheaper alternative for AIM. The new price tag? About 210 million euros, said Patrick Michel, the science lead for the European part of the project.

And of course there will be a delay.

European Space Agency boss Jan Woerner told AFP "we will go forward with a new proposal" for the next ministerial meeting in 2019.




 
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