Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202.1141p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 202, Mar. 1983, p. 1141-1148. Research supported by the Science and Eng
Astronomy and Astrophysics
Astronomy
3
Escape Velocity, Natural Satellites, Planetary Mass, Regolith, Satellite Surfaces, Amalthea, Deimos, Lagrangian Equilibrium Points, Phobos, Solar System, Three Body Problem, Mars, Planets, Satellites, Regolith, Distribution, Data, Velocity, Surface, Shape, Analysis, Phobos, Deimos, Amalthea, Escape, Calculations, Mathematical Models, Jupiter
Scientific paper
The variations in the escape velocity from point to point over the surface of solar system objects is investigated for spherical satellites and for the three clearly non-spherical satellites, Phobos, Deimos, and Amalthea. These variations occur because the surface of rigid satellites may not coincide in shape with the Jacobi surfaces. This variation can be determined analytically for spherical satellites, although a numerical investigation is necessary for the non-spherical satellites. It is determined that the surfaces of Phobos and Deimos are just stable, while large areas of the surface of Amalthea are unstable. In addition, it is shown that there is a difference between the surface velocity distribution on Phobos and Deimos, the most stable points on Deimos being the most unstable on Phobos and vice versa.
Papadakos D. N.
Williams Iwan P.
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