Hill sphere - Wikipedia
The Hill radius or sphere (the latter defined by the former radius [citation needed]) has been described as "the region around a planetary body where its own gravity (compared to that of the Sun or other …
Hill Sphere: The Gravitational Boundaries of Space
Sep 17, 2025 · Each celestial body, from planets to moons, exhibits a distinct Hill sphere influenced by its mass and proximity to the Sun. Understanding these individual Hill spheres is instrumental in …
Hill Sphere – Definition & Detailed Explanation - Sentinel Mission
Oct 3, 2025 · The Hill Sphere is instrumental in the study of exoplanets, planets that orbit stars outside our solar system. By calculating the Hill Sphere of a star and its exoplanets, astronomers can …
newtonian gravity - What is the reasoning behind the Hill Sphere ...
Dec 16, 2013 · Within the Hill sphere of the Earth, objects can orbit the Earth, because in the non-rotating frame of reference centered in the Earth (moving with acceleration around the Sun, so the …
What is the Hill Sphere and How Does it Determine a Body's Orbital ...
Aug 13, 2024 · There's a special area around Earth called the Hill Sphere, where Earth's gravity is stronger than the Sun's. If something is inside the Hill Sphere, it'll orbit Earth. But if it goes outside, …
Hill sphere - Space Wiki
Within the solar system, the planet with the largest Hill sphere is Neptune, with 116 Gm, or 0.775 AU; its great distance from the Sun amply compensates for its small mass relative to Jupiter (whose own Hill …
Hill Spheres: Where the MoonMoons Are - Astronomical Returns
Aug 16, 2022 · In orbital mechanics, the Hill Sphere of an astronomical body (named after American astronomer George William Hill) refers to its sphere of gravitational dominance, particularly in the …
Hill radius - astro.vaporia.com
An astronomical body 's Hill radius is a calculated radius of the surrounding spherical region (Hill sphere aka Roche sphere) within which smaller bodies would tend to orbit the body despite the gravity of …
Hill sphere - Citizendium
Aug 29, 2021 · For a planet, the Hill sphere is the imaginary sphere within which a satellite or moon can be in orbit around the planet, and outside of which the Sun or star's gravity prevents the smaller body …
Sphere of influence (astrodynamics) - Wikipedia
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.