Author/Authors :
Scheeres، نويسنده , , D.J. and Abe، نويسنده , , M. and Yoshikawa، نويسنده , , M. and Nakamura، نويسنده , , R. and Gaskell، نويسنده , , R.W. and Abell، نويسنده , , P.A.، نويسنده ,
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 Itokawaʹs past history are discussed and related to possible seismic shaking.
