Shepherding satellite

From 1982, Neptune was suspected to have rings like the other Jovian planets. However, confirmation of suspected occultations of stars by rir s of Neptune was not definite occultaticns by possible rings were only observed sometimes. This led to the theory that Neptune had a set of incomplete arc rights which were maintained by gravitational perturbations from one or more shepherd satellites which were still undiscovered. 

Shepherd satellite—planetary satellite whose gravitational perturbations on a particle tend to keep it in a stable orbit around the planet. The Pascal (Pa) is the metric unit of pressure (force per unit area). One Pascal is defined as a pressure of one Newton per square meter. The standard sea level atmospheric pressure on Earth is 101,200 Pascals. 

The main planets between t and Sol follow the wave pattern generated by the perturbation of the solar pattern by the presence of Jupiter. The central inner planet, Earth is the most massive of these. Each planetary system is surrounded by a wave pattern similar to (a), with moons on well-defined quantized orbits and with rings and shepherding satellites in the inner sector. 

McLandress, C., G.S. Shepherd, B.H. Solheim, M.D. Burrage, P.B. Hays, and W.R. Skinner, Combined mesosphere/thermosphere winds using WINDII and HRDI data from the Upper Atmosphere Research Satellite. J Geophys Res 101, 10,441, 1996. 

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