secular precession

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• Secular resonance — A secular resonance is a type of orbital resonance. Secular resonances occur when the precession of two orbits is synchronised (a precession of the perihelion, of the ascending node, or both). A small body in secular resonance with a much larger… …   Wikipedia

• Secular variations of the planetary orbits — The Secular Variations of the Planetary Orbits (French: Variations Séculaires des Orbites Planétaires, abbreviated as VSOP) is a semi analytic theory describing the long term changes (secular variation) in the orbits of the planets Mercury to… …   Wikipedia

• Orbital resonance — For the science fiction novel by John Barnes, see Orbital Resonance (novel). In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their… …   Wikipedia

• Geodetic effect — This article is about precession of orbiting bodies. For observing binary stars, see de Sitter double star experiment. A representation of the geodetic effect …   Wikipedia

• De Sitter effect — In astrophysics, the term De Sitter effect (named after the Dutch physicist Willem de Sitter) has been applied to two unrelated phenomena. The De Sitter effect was first described by de Sitter in 1913 and used to support the special theory of… …   Wikipedia

• geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …   Universalium

• calendar — calendrical /keuh len dri keuhl/, calendric, calendarial /kal euhn dair ee euhl/, calendarian, calendaric, adj. /kal euhn deuhr/, n. 1. a table or register with the days of each month and week in a year: He marked the date on his calendar. 2. any …   Universalium

• Frame-dragging — Albert Einstein s theory of general relativity predicts that rotating bodies drag spacetime around themselves in a phenomenon referred to as frame dragging. The rotational frame dragging effect was first derived from the theory of general… …   Wikipedia

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• Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …   Wikipedia

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