Space weathering of Itokawa, a small rubble pile asteroid

Details Space weathering of Itokawa, a small rubble pile asteroid Space weathering of Itokawa, a small rubble pile asteroid

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1120s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1120

Physics

Scientific paper

Itokawa's surface show darkening and reddening by space weathering, although its surface is covered with rocks and pebbles and deficient in fine regolith. Experimental results suggest rocky meteorite fragments can be weathered. The opposition effect in rocky terrain of Itokawa suggested that the surface would be covered by particulate materials or porous enough to scatter light. Itokawa-derived fine grains (some of which have nanophase iron) in Hayabusa sample capsule clearly indicate the presence of fine particles on the surface of Itokawa and their effect on the optical property of the asteroid.

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