The unusual dynamical environment of PHOBOS and Deimos

Details The unusual dynamical environment of PHOBOS and Deimos The unusual dynamical environment of PHOBOS and Deimos

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...47..220d&link_type=abstract

Icarus, vol. 47, Aug. 1981, p. 220-233.

Astronomy and Astrophysics

Astronomy

37

Deimos, Ejecta, Orbit Calculation, Phobos, Satellite Surfaces, Structural Properties (Geology), Angular Velocity, Astronomical Models, Ballistic Trajectories, Impact Damage, Meteorite Craters, Three Dimensional Models, Mars, Satellites, Phobos, Deimos, Dynamics, Models, Gravity Effects, Escape, Velocities, Ejecta, Impacts, Orbits, Distance, Comparisons, Grooves, Position (Location), Origin, Surface, Maps, Rotation, Data, Parameters, Trajectories, Distribution, Acceleration

Scientific paper

A three-dimensional numerical model is used to study the dynamical environment of Phobos and Deimos. Surface gravity, escape speeds, and ejecta impact contours are calculated both for the satellites at their present orbit distances, and for orbit distances they may have had in the past. Impact loci for Stickney ejecta are also calculated and compared with the observed groove locations in order to evaluate a possible secondary-impact origin for the grooves on Phobos. Attention is also given to the possible influence of the dynamical environment on shaping the satellites' surfaces.

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