Department of Aeronautics and Astronautics, Graduate School of Engineering, University of Tokyo
Arthur D. Little (Japan)
JAXA Space Exploration Center, Japan Aerospace Exploration Agency (JAXA)(JSPEC) : Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
JAXA Space Exploration Center, Japan Aerospace Exploration Agency (JAXA)(JSPEC)
JAXA Space Exploration Center, Japan Aerospace Exploration Agency (JAXA)(JSPEC)
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)
雑誌名
アストロダイナミクスシンポジウム講演後刷り集
雑誌名(英)
Proceedings of 19th workshop on JAXA Astrodynamics and Flight Mechanics
Workshop on JAXA Astrodynamics and Flight Mechanics, 2009 (July 30-31, 2009. Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan
The spacecraft "HAYABUSA" observed an asteroid "ITOKAWA" by a high resolution camera.The observations found out that ITOKAWA is a rubble-pile asteroid, which is made up of the rocks piled up. Gravitational force, frictional force, centrifugal force and small particle collisions made its shape and regolith distribution unique. We focus on the Brazil-Nuts effect. The effect is a phenomenon in which the largest particles end up on the surface when a granular material containing a mixture of objects of different size is shaken. In this research, the behaviors of various size particles are analyzed by numerical simulations using multiparticle model.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
Distribution of particles in a rubble-pile asteroid
