Rotational dynamics of irregularly shaped natural satellites

Details Rotational dynamics of irregularly shaped natural satellites Rotational dynamics of irregularly shaped natural satellites

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1350w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Nov. 1987, p. 1350-1360.

Astronomy and Astrophysics

Astronomy

41

Natural Satellites, Satellite Rotation, Amalthea, Chaos, Deimos, Irregularities, Janus, Phobos, Planetary Orbits, Shapes, Planets, Satellites, Rotation, Dynamics, Shape, Calculations, Phobos, Mars, Deimos, Saturn, 1980S26, 1980S27, Amalthea, Janus, Epimetheus, Jupiter, Parameters, Diagrams, Orbits, Evolution, Angular Momentum

Scientific paper

The rotational histories of irregularly shaped satellites are studied and are found to differ from the standard picture of tidal evolution of satellite rotations. Prior to capture into the synchronous rotation resonance, a narrow attitude-unstable chaotic zone is entered and the satellite begins to tumble chaotically. It is noted that enhanced dissipation of energy during the chaotic-tumbling phase may effect the orbital evolution. The theory suggests that, eventually, the rotation stays close to one of the accessible attitude-stable islands long enough for the weak tidal torque to remove the satellite from the chaotic zone.

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