Publication Date:
2019-07-20
Description:
Images of asteroid (101955) Bennu acquired by the OSIRIS-REx mission reveal a rocky world covered in rubble; Shape deviates from hydrostatic surface; Internal friction and/or cohesion even if no tensile strength; Understanding the deviation of the surface from idealized shape may help constrain mechanical properties of the interior; Geologic evolution of Bennu is driven by downslope migration of surface material and rubble; May be caused by YORP-induced spin-up, re-accumulation, impact-induced seismic shaking, thermal stresses, or tidal disruption by close encounters to larger bodies.
Keywords:
Lunar and Planetary Science and Exploration
Type:
GSFC-E-DAA-TN66762
,
Lunar and Planetary Science Conference; Mar 18, 2019 - Mar 22, 2019; The Woodlands, TX; United States
Format:
application/pdf