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Occultation astrometry for NEA study and risk mitigation

This project, renamed ACROSS (Asteroid Collaborative Research by Occultation Systematic Survey), aimed at considerably improving the predictability of stellar occultations by small and difficult targets such as the Near Earth Asteroids (NEAs). In particular, it focused on the binary asteroid 65803 Didymos, target of the DART (NASA) and Hera (ESA) missions, and other NEAs: either secondary targets of Hera, or NEAs whose orbit is accurate enough. Stellar occultations are an unbeatable approach to:

France

S 2020-09-a

Observatoire de la Côte...
Hera Investigation Team (HIT) analyses

We have continued our shock physics code calculation studies of DART-like impact events. This includes comparisons of iSALE and SPH code calculations, using a range of strength and structural properties. The effect of porosity was studied in detail by applying different crushcurves, representing materials with varying crushing strength. The crushcurve was found to have a large influence on the outcome, in particular the ejecta properties and momentum transfer.

France

18/701

OCA
Asteroid Impact Mission Advisory Study

In this report, we describe the advisory study for both the Asteroid Impact Monitoring (AIM) as a stand-alone European mission and for AIM with its second component, the US Double Asteroid Redirection Test (DART) mission under study at NASA by the John Hopkins University Applied Physics Laboratory.

France

15/700

Observatoire de la Côte...

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