Hyperion - Collisional disruption of a resonant satellite

Details Hyperion - Collisional disruption of a resonant satellite Hyperion - Collisional disruption of a resonant satellite

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...54..353f&link_type=abstract

(Saturn Conference, Tucson, AZ, May 11-15, 1982) Icarus (ISSN 0019-1035), vol. 54, May 1983, p. 353-360. Research supported by t

Computer Science

27

Eccentric Orbits, Hyperion, Libration, Orbit Perturbation, Planetary Orbits, Collisions, Ejecta, Orbital Resonances (Celestial Mechanics), Planetary Evolution, Titan, Saturn, Satellites, Hyperion, Collisions, Resonance, Evolution, Formation, Orbits, Comparisons, Libration, Amplitude, Observations

Scientific paper

The possibility that the peculiar orbital motion of Hyperion, characterized by a strong orbit-orbit resonance with the neighboring Titan, was responsible for Hyperion's failure to reaccrete fragments after its collisional disruption is investigated. Numerical experiments performed to explore the region of the phase space surrounding the present orbit show that most fragments ejected with a relative velocity greater than about 0.1 km/s rapidly attain chaotic orbits with repeated close encounters with Titan. Ejection velocities of this order of magnitude are expected for collisions of about 10 km/sec with a projectile-to-target mass ratio of the order of 10 to the -3. Such events are not likely to displace the largest remnant (i.e., the present Hyperion) outside the stable region of the phase space associated with the resonance, but could be responsible for the large amplitude of the observed orbital libration.

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