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Radar observations of asteroid 216 kleopatra
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USA. School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA 99164-2752, USA. Arecibo Observatory, HC3 Box.
Science (New York, N.Y.)
|May 8, 2000
Summary
Radar observations reveal asteroid 216 Kleopatra is a large, dumbbell-shaped M-class asteroid. Its metallic surface and unconsolidated interior suggest a unique collisional history.
Area of Science:
- Planetary Science
- Asteroid Research
- Radar Astronomy
Background:
- M-class asteroids are a significant group within the main asteroid belt.
- Understanding asteroid composition and structure is crucial for planetary formation studies.
Purpose of the Study:
- To characterize the physical properties of asteroid 216 Kleopatra using radar observations.
- To investigate the shape, size, surface composition, and internal structure of Kleopatra.
Main Methods:
- Utilized radar observations to probe asteroid 216 Kleopatra.
- Analyzed radar data to determine dimensions, shape, and surface characteristics.
Main Results:
- Asteroid 216 Kleopatra exhibits a dumbbell shape with dimensions of 217x94x81 km.
- Surface properties indicate a metallic regolith with porosity similar to lunar soil.
- The asteroid's structure is likely unconsolidated, resembling a rubble pile.
Conclusions:
- Kleopatra's unique shape is likely a result of complex collisional events.
- The asteroid's internal structure supports a rubble-pile model, influenced by its formation history.
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