Shepherding model for Neptune's arc ring

Details Shepherding model for Neptune's arc ring Shepherding model for Neptune's arc ring

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.318..544l&link_type=abstract

Nature (ISSN 0028-0836), vol. 318, Dec. 12, 1985, p. 544, 545.

Other

39

Celestial Mechanics, Natural Satellites, Neptune (Planet), Planetary Orbits, Planetary Rings, Astronomical Models, Trojan Orbits

Scientific paper

An incomplete arc ring has recently been discovered around Neptune. Here, a model to explain the confinement of this ring is developed. The ring may be azimuthally confined near a triangular (Trojan) point of an undiscovered satellite of Neptune. Radial diffusion of the ring particles can be prevented by shepherding torques of another moon. Two satellites with diameters of 100 - 200 km would be sufficient to confine the ring; such moons would be too small to have been photographed from Earth.

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