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  2. Hill sphere - Wikipedia

    en.wikipedia.org/wiki/Hill_sphere

    The Hill sphere is a common model for the calculation of a gravitational sphere of influence. It is the most commonly used model to calculate the spatial extent of gravitational influence of an astronomical body ( m ) in which it dominates over the gravitational influence of other bodies, particularly a primary ( M ). [ 1 ]

  3. Talk:Hill sphere - Wikipedia

    en.wikipedia.org/wiki/Talk:Hill_sphere

    In the example to the right, Earth's Hill sphere extends between the Lagrangian points L1 and L2, which lie along the line of centers of the two bodies. is difficult to correlate with the diagram. There is no circle passing through both L1 and L2, but that's what I expect from the text.

  4. File:Comparison of Hill sphere and Roche limit.svg - Wikipedia

    en.wikipedia.org/wiki/File:Comparison_of_Hill...

    comparison of Hill sphere and Roche limit: Image title: Comparison of the Hill spheres and Roche limits of the Sun-Earth-Moon system (not to scale) with shaded regions denoting stable orbits of satellites of each body by CMG Lee. Width: 100%: Height: 100%

  5. Lists of uniform tilings on the sphere, plane, and hyperbolic ...

    en.wikipedia.org/wiki/Lists_of_uniform_tilings...

    There are different notations for expressing these uniform solutions, Wythoff symbol, Coxeter diagram, and Coxeter's t-notation. Simple tiles are generated by Möbius triangles with whole numbers p,q,r, while Schwarz triangles allow rational numbers p,q,r and allow star polygon faces, and have overlapping elements.

  6. Sphere of influence (astrodynamics) - Wikipedia

    en.wikipedia.org/wiki/Sphere_of_influence_(astro...

    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. This is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects such as moons , despite the ...

  7. Terrain cartography - Wikipedia

    en.wikipedia.org/wiki/Terrain_cartography

    In 1921, A.K. Lobeck published A Physiographic Diagram of the United States, using an advanced version of the hill profile technique to illustrate the distribution of landforms on a small-scale map. [1] Erwin Raisz further developed, standardized, and taught this technique, which uses generalized texture to imitate landform shapes over a large ...

  8. Roche lobe - Wikipedia

    en.wikipedia.org/wiki/Roche_lobe

    It is the easiest way for the debris to commute between a Hill sphere (an inner circle of blue and light blue) and communal gravity regions (figure-eights of yellow and green in the inner side). Hill sphere and horseshoe orbit. L 2 and L 3 are gravitational perturbation equilibria points. Passing through these two equilibrium points, debris can ...

  9. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    The Hill sphere, or the sphere of gravitational influence, of Earth is about 1.5 million km (930,000 mi) in radius. [ 164 ] [ n 11 ] This is the maximum distance at which Earth's gravitational influence is stronger than that of the more distant Sun and planets.