@inproceedings{oai:jaxa.repo.nii.ac.jp:00007273, author = {Hartzell, Christine M. and Scheeres, Daniel J.}, book = {アストロダイナミクスシンポジウム講演後刷り集, The 20th Workshop on JAXA Astrodynamics and Flight Mechanics}, month = {Mar}, note = {第20回アストロダイナミクスシンポジウム (2010年7月26-27日. 宇宙航空研究開発機構宇宙科学研究所), 相模原市, 神奈川県, The 20th Workshop on JAXA Astrodynamics and Flight Mechanics 2010 (July 26-27, 2010. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, The movement of small dust particles on and near the surface of the Moon and asteroids due to electrostatic forces is being investigated to explain several observational phenomena. However, to date a feasible method for launching particles off the surface of these bodies has not been described. Thus, existing numerical models of dust transport use arbitrarily chosen initial states of the particles. From numerical models, we see that a subset of particles experience altitude oscillations above the body's surface instead of traveling on traditional conic orbits. The equations of motion of this system are coupled and the motion is nonconservative. We have numerically calculated the equilibria of the system and developed an analytical approximation of the stable equilibria. The stability of the equilibria are evaluated for the linearized system. By understanding the behavior of particles near the stable equilibria, it will then be possible to state whether or not particle levitation occurs in situ once a feasible particle launching method is identified., 資料番号: AA0065115026}, pages = {153--162}, publisher = {宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS), Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)}, title = {Dust Particle Levitation Near Asteroids and the Moon}, volume = {20}, year = {2011} }