|
|||||
|
|
The effect of YORP on Itokawa |
|
| Authors: | DJ Scheeres M Abe R Nakamura PA Abell |
| Institution: | a Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2140, USA b Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan c National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan d Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA e National Aeronautics and Space Administration, Lyndon B. Johnson Space Center, Houston, TX 77058, USA |
| Abstract: | The effect of solar radiation on the near-term rotation rate of Asteroid Itokawa via the YORP effect is predicted using the detailed shape model, rotation pole, mass estimate, and optical properties derived from the Hayabusa mission to Itokawa. Based on these estimates Itokawa is decelerating at a rate which will halve its rotation rate in only 50-90 thousand years, a large deceleration that should be detectable in a future appartion. The implications of such a large deceleration for Itokawa's past history are discussed and related to possible seismic shaking. |
| Keywords: | Asteroids Rotational dynamics |
| 本文献已被 ScienceDirect 等数据库收录！ | |