Tidal encounters of ellipsoidal granular asteroids with planets

Details Tidal encounters of ellipsoidal granular asteroids with planets Tidal encounters of ellipsoidal granular asteroids with planets

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006icar..183..312s&link_type=abstract

Icarus, Volume 183, Issue 2, p. 312-330.

Statistics

Methodology

14

Scientific paper

We investigate planetary fly-bys of asteroids using an approximate volume-averaged method that offers a relatively simple, but very flexible, approach to study the rotational dynamics of ellipsoids. The asteroid is considered to be a deformable, prolate ellipsoid, with its interior being modeled as a rigid-granular material. Effects due to the asteroid's rotation, its self-gravity and gravitational interaction with the planet are included. Using a simplified approach allows us to explore in detail the mechanics of asteroid's deformations and disruptions during planetary encounters. We also compare our results with those obtained by Richardson et al. [Richardson, D.C., Bottke Jr., W.F., Love, S.G., 1998. Icarus 134, 47 76] who used a large numerical code. We find that many of the features reported by them can indeed be captured by our rather simple methodology, and we discuss the reasons why some of our results differ from theirs.

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