Asteroid collisional evolution. I - Angular momentum splash - Despinning asteroids through catastrophic collisions

Details Asteroid collisional evolution. I - Angular momentum splash - Despinning asteroids through catastrophic collisions Asteroid collisional evolution. I - Angular momentum splash - Despinning asteroids through catastrophic collisions

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...87..391c&link_type=abstract

Icarus (ISSN 0019-1035), vol. 87, Oct. 1990, p. 391-402. Research supported by CNR, MPI and NASA.

Astronomy and Astrophysics

Astrophysics

20

Angular Momentum, Asteroids, Collision Parameters, Planetary Evolution, Astronomical Models, Collisions, Spin Dynamics

Scientific paper

It is demonstrated that there exists an angular momentum loss following catastrophic breakup due to asymmetric escape of fragments. This so-called angular momentum splash mechanism in catastrophic collisions is shown to cause a spindown relative to the postimpact spin rate computed without this effect. For asteroids about 100 km in diameter, there is a net spindown relative to the preimpact spin rate. The relevance of this effect to the spin evolution of asteroids of different sizes is examined.

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