Failure mode diagram of rubble pile asteroids: Application to (25143) asteroid Itokawa

Itokawa: a Sub-km, S-type, Rubble Pile Asteroid Investigated by Hayabusa

The Deflection of Menacing Rubble Pile Asteroids

Near-infrared Photometry of Asteroid 25143 Itokawa by the Nirs Onboard Hayabusa

K. Kitazato1,2, B.E. Clark3, M. Abe2, S. Abe4, Y. Takagi5, and T. Hiroi6, 1Department of Earth and Planetary Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JAPAN, [email protected], 2Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 229-8510, JAPAN, 3Physics Department, Ithaca College, Ithaca, NY 14850, USA, 4Dep...

Thermal infrared observations of the Hayabusa spacecraft target asteroid 25143 Itokawa ⋆

We obtained N-and Q-band observations of the Apollo-type asteroid 25143 Itokawa during its close Earth approach in July 2004 with TIMMI2 at the ESO 3.6 m telescope. Our photometric measurement, in combination with already published data, allowed us to derive a radiometric effective diameter of 0.32±0.03 km and an albedo of 0.19 +0.11 −0.03 through a thermophysical model. This effective diameter...

Towards understanding the dynamical evolution of asteroid 25143 Itokawa: constraints from sample analysis

The data from the analysis of samples returned by Hayabusa from asteroid 25143 Itokawa are used to constrain the preaccretion history, the geological activity that occurred after accretion, and the dynamical history of the asteroid from the main belt to near-Earth space. We synthesize existing data to pose hypotheses to be tested by dynamical modeling and the analyses of future samples returned...