Physical properties of Uranian delta ring from a possible density wave

Details Physical properties of Uranian delta ring from a possible density wave Physical properties of Uranian delta ring from a possible density wave

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...76..485h&link_type=abstract

Icarus (ISSN 0019-1035), vol. 76, Dec. 1988, p. 485-492.

Physics

10

Density Wave Model, Stellar Occultation, Uranus Rings, Flyby Missions, Orbital Resonances (Celestial Mechanics), Voyager Project

Scientific paper

The Voyager PPS stellar occultation observations of the Uranian δ ring show evidence for a moonlet interior to the δ ring, which excites a density wave at 48,299.6±0.4 km. Sixty-five discrete locations are possible for the orbit of this unseen moonlet. Allowing for these 65 possible locations, the authors find the surface mass density of the δ ring 5 ⪉ σ ⪉ 10 g/cm2, the viscosity 10 ⪉ ν ⪉ 40 cm2/sec, and the local ring height 7 ⪉ h ⪉ 20 m. All of the inner and outer first order Lindblad resonances were calculated for the 65 possible moonlet locations. Moonlet 101, located at 47,984.1±0.4 km has resonances which can also shepherd the inner edge of the δ ring and the outer edge of the γ ring.

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