S
S
Last name: SUGITA
First name: S.
International audience
Introduction: Images sent by the two sample-return space missions Hayabusa2 (JAXA) and OSIRIS-REx (NASA) show that asteroids Ryugu and Bennu are top shapes: oblate spheroids with a more or less pronounced equatorial bulge, also referred to as diamonds or bi-cones. Radar models of other asteroids , including binary primaries, as well as images...
Asteroid shapes and hydration levels can serve as tracers of their history and origin. For instance, the asteroids (162173) Ryugu and (101955) Bennu have an oblate spheroidal shape with a pronounced equator, but contain different surface hydration levels. Here we show, through numerical simulations of large asteroid disruptions, that oblate...
Rubble pile asteroids are widely understood to be composed of reaccumulated debris following a catastrophic collision between asteroids in the main asteroid belt, where each disruption can make a family of new asteroids. Near-Earth asteroids Ryugu and Bennu have been linked to collisional families in the main asteroid belt, but surface age...
Images of asteroids (162173) Ryugu and (101955) Bennu acquired by the Hayabusa2 and OSIRIS-REx missions, respectively, reveal rocky worlds covered in rubble. These two asteroids do not have hydrostatic shapes, indicating that they possess some internal friction and/or cohesion even if they lack tensile strength. Understanding the deviation of...
International audience
International audience
International audience