Near-infrared spectral results of asteroid Itokawa from the Hayabusa spacecraft |
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Authors: | Abe M Takagi Y Kitazato K Abe S Hiroi T Vilas F Clark B E Abell P A Lederer S M Jarvis K S Nimura T Ueda Y Fujiwara A |
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Institution: | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan. |
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Abstract: | The near-infrared spectrometer on board the Japanese Hayabusa spacecraft found a variation of more than 10% in albedo and absorption band depth in the surface reflectance of asteroid 25143 Itokawa. Spectral shape over the 1-micrometer absorption band indicates that the surface of this body has an olivine-rich mineral assemblage potentially similar to that of LL5 or LL6 chondrites. Diversity in the physical condition of Itokawa's surface appears to be larger than for other S-type asteroids previously explored by spacecraft, such as 433 Eros. |
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