Shepherd Satellite

Shepherd Satellite
   A satellite which maintains the structure of rings around a planet through the effects of the satellites gravity. The F ring of Saturn has two shepherd moons, Prometheus and Pandors, which maintain its structure.

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  • shepherd satellite — shepherd moon or shepherd satellite noun A moon whose gravitational field confines a planetary ring • • • Main Entry: ↑shepherd …   Useful english dictionary

  • shepherd moon — or shepherd satellite noun A moon whose gravitational field confines a planetary ring • • • Main Entry: ↑shepherd * * * shepherd moon, Astronomy. a moon that orbits near the inner and outer edges of the rings of a planet with rings, probably… …   Useful english dictionary

  • Shepherd (disambiguation) — A shepherd is a person who herds sheep.Shepherd may also refer to: * A sheep dog;People * Shepherd (surname);Places * The Shepherd Islands in the nation of Vanuatu, south Pacific OceanIn the United States: * Shepherd, Indiana * Shepherd, Michigan …   Wikipedia

  • shepherd — informal name applied to a satellite orbiting very close to a ring and thought to cause a gravitational focusing that keeps the ring particles from drifting in the direction of the shepherd satellite …   Mechanics glossary

  • shepherd moon — noun A small moon that orbits near the outer edges of a planetary ring or within gaps in the ring. The edge of the ring remains sharply defined owing to the gravity of shepherd moons. Syn: shepherd satellite …   Wiktionary

  • Satellite Award de la meilleure actrice - Série comique — Les Satellite Awards de la meilleure actrice dans une série comique ou musicale sont des récompenses du cinéma et de la télévision américains décernées par The International Press Academy. Sommaire 1 Liste des gagnants et nominés 1.1 Années 1990 …   Wikipédia en Français

  • Satellite Awards 1996 — Die 1. Verleihung der US amerikanischen Satellite Awards, welche die International Press Academy (IPA) jedes Jahr in verschiedenen Film und Medienkategorien vergibt, fand am Mittwoch, den 15. Januar 1997 in Los Angeles statt. Präsentiert wurden… …   Deutsch Wikipedia

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  • Sea Shepherd Conservation Society — Infobox Non profit Non profit name = Sea Shepherd Conservation Society Non profit Non profit type = 501(c)(3) founded date = 1981 in Oregon, USA founder = Paul Watson location = Friday Harbor, Washington, USA origins = key people = area served =… …   Wikipedia

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