Radar Observations of Asteroid 216 Kleopatra-Reference-Cited by-同舟云学术

Radar Observations of Asteroid 216 Kleopatra

Published:2000-05-05 Issue:5467 Volume:288 Page:836-839
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Ostro Steven J.¹,Scott R.,Hudson ²,Nolan Michael C.³,Margot Jean-Luc³,Scheeres Daniel J.⁴,Campbell Donald B.⁵,Magri Christopher⁶,Giorgini Jon D.¹,Yeomans Donald K.¹

Affiliation:

1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109–8099, USA.

2. School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA 99164–2752, USA.

3. Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612, USA.

4. Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109–2140, USA.

5. Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA.

6. University of Maine at Farmington, Preble Hall, 39 High Street, Farmington, ME 04938, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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