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Sphere of influence (astrodynamics)

A sphere of influence (SOI) in astrodynamics and astronomy is the oblate spheroid-shaped region where a particular celestial body exerts the main gravitational influence on an orbiting object. As such it is the dominating part of a gravitational field. It is usually used to describe the areas in the Solar System where planets dominate the orbits of…

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Models

Gravity well

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Sphere of influence (astrodynamics)

Nodes38
Edges37
Triples6
Avg. degree1.95
Density0.052632
Components1

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Important terminology

displaystyle sun influence soi sphere body gravity gravitational mass frame field well frac due one general primary distance perturbation chi

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
moonsinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text
despite the presence of the much more massive but distant Sun.In the patched conic approximationinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text
used in estimating the trajectories of bodies moving between the neighbourhoods of different bodies using a two-body approximationinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text
ellipsesinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text
hyperbolaeinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text
the SOI is taken as the boundary where the trajectory switches which mass field it is influenced byinstance ofIt is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects0.80text

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