Structure of the Uranian rings. II - Ring orbits and widths

Details Structure of the Uranian rings. II - Ring orbits and widths Structure of the Uranian rings. II - Ring orbits and widths

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...67..134f&link_type=abstract

Icarus (ISSN 0019-1035), vol. 67, July 1986, p. 134-163.

Physics

50

Natural Satellites, Occultation, Planetary Orbits, Uranus Rings, Opacity, Orbit Perturbation, Particle Density (Concentration)

Scientific paper

A square-well model was used to calculate the midtimes, widths and optical depths at visible and IR wavelengths of the nine Uranian rings based on 13 occultation measurements from 1977-1983. Many of the measurement campaigns contained data from repeated crossings. An improved kinematical model is developed for the ring system, noting that the gamma and delta rings were confirmed to depart from Keplerian ellipses. Upper limits are calculated for the sizes of shepherd satellites of various potential densities. The ring width determinations demonstrate the existence of significant width perturbations in the rings, which all displayed particle shadowing.

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