Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...94..272y&link_type=abstract
Icarus (ISSN 0019-1035), vol. 94, Dec. 1991, p. 272-282. Research supported by NASA and MOESC.
Astronomy and Astrophysics
Astrophysics
11
Angular Momentum, Asteroids, Kinetic Energy, Momentum Transfer, Least Squares Method, Planetary Mass, Planetary Rotation
Scientific paper
An experimental study has been conducted for the low-velocity oblique impact efficiency of angular momentum transfer, which is defined as that fraction of incident angular momentum that is transferred to the rotation of a target. The results obtained suggest that more energetic impacts are able to transfer angular momentum more efficiently. In the cases of ricochetted projectiles, the fraction of angular momentum carried off by the ejecta was noted to be less than 30 percent. It is suggested that, if asteroid spin rates are due to mutual noncatastrophic collisions and the taxonomic classes are indicative of bulk properties, the differences between corresponding spin rates will be smaller than expected from a consideration of relative strength and density alone.
Ahrens Thomas J.
Eluszkiewicz Janusz
Yanagisawa Masahisa
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