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Radar Observations of Asteroid 216 Kleopatra

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Science  05 May 2000:
Vol. 288, Issue 5467, pp. 836-839
DOI: 10.1126/science.288.5467.836

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Abstract

Radar observations of the main-belt, M-class asteroid 216 Kleopatra reveal a dumbbell-shaped object with overall dimensions of 217 kilometers by 94 kilometers by 81 kilometers (±25%). The asteroid's surface properties are consistent with a regolith having a metallic composition and a porosity comparable to that of lunar soil. Kleopatra's shape is probably the outcome of an exotic sequence of collisional events, and much of its interior may have an unconsolidated rubble-pile structure.

  • * To whom correspondence should be addressed. E-mail: ostro{at}reason.jpl.nasa.gov

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