JAWIN , E.

Bennu is an~500-m-diameter rubble-pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission. Here we use data from the OSIRIS-REx Laser Altimeter to assess depth-to-diameter ratios (d/D) of 108 impact craters larger than 10 m in...

International audience

When rubble-pile asteroid 2008 TC3 impacted Earth on October 7, 2008, the recovered rockfragments indicated that such asteroids can contain exogenic material [1,2]. However,spacecraft missions to date have only observed exogenous contamination on large,monolithic asteroids that are impervious to collisional disruption [3, 4]. Here we report...

The gravity field of a small body provides insight into its internal mass distribution. We used two approaches to measure the gravity field of the rubble-pile asteroid (101955) Bennu: (i) tracking and modeling the spacecraft in orbit about the asteroid and (ii) tracking and modeling pebble-sized particles naturally ejected from Bennu's surface...

International audience

International audience

International audience