Doublet craters and the tidal disruption of binary asteroids

Details Doublet craters and the tidal disruption of binary asteroids Doublet craters and the tidal disruption of binary asteroids

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...94..171m&link_type=abstract

Icarus (ISSN 0019-1035), vol. 94, Nov. 1991, p. 171-179.

Computer Science

27

Asteroids, Craters, Earth Planetary Structure, Planetary Craters, Roche Limit, Impact Prediction, Orbital Mechanics, Tides

Scientific paper

An evaluation is conducted of the possibility that the tidal disruption of a population of contact binary asteroids can account for terrestrial-impact 'doublet' craters. Detailed orbital integrations indicate that while such asteroids are often disrupted by tidal forces outside the Roche limit, the magnitude of the resulting separations is too small to account for the observed doublet craters. It is hypothesized that an initial population of km-scale earth-crossing objects encompassing 10-20 percent binaries must be responsible for doublet impacts, as may be verified by future observations of earth-approaching asteroids.

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