Numerical study on the motion of surface particles for the asteroid 101955 bennu
Asteroid 101955 Bennu is the target asteroid of the ongoing asteroid sample return mission OSIRIS-Rex from NASA. In the mission, the spacecraft is scheduled to rendezvous with Bennu in August 2018. Investigating the dynamics of surface motion can offer guidance for further hopping landers or even sample return missions on Bennu or similarly irregular-shaped asteroids. This paper presents the free motion of some particles on and above the surface of the asteroid Bennu.