Lagrangian point

Also known as Lagrange points, Lagrange point, L-points, libration points

one of five positions in an orbital configuration of two large bodies where a small object can maintain a stable relative position

AI overview

A Lagrangian point is a location in space where a small object can stay in a fixed position relative to two larger orbiting bodies, like Earth and the Sun, without needing to use fuel to maintain its spot. These points matter because they're useful places to park spacecraft and telescopes, since the objects naturally stay put there due to the balance of gravitational forces.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Vinony's link graph records 956 inbound references to Lagrangian point, and connects out to gravity, artificial satellite and binary star.

It is catalogued under topics including Lagrangian mechanics and Trojans (astronomy).

Vinony links it to 75 Wikipedia language editions.

Wikidata facts

Image: Lagrange points.jpg

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Commons category: Lagrange points
exact match: purl.obolibrary.org/obo/ENVO_01001229

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Encyclopedic overview

Lagrange points in the Sun–Earth system (not to scale). This view is from the north, such that Earth's orbit is counterclockwise. A contour plot of the effective potential due to gravity and the centrifugal pseudo-force of a two-body system in a rotating frame of reference. The arrows indicate the downhill gradients of the potential around the five Lagrange points, toward them (red) and away from them (blue). Counterintuitively, the L4 and L5 points are the high points of the potential. At the points themselves these forces are balanced. An example of a spacecraft at Sun–Earth L2, the Wilkinson Microwave Anisotropy Probe, or WMAP WMAP Earth

In celestial mechanics, the Lagrange points (/ləˈɡrɑːndʒ/), also called the Lagrangian points or libration points, are points of equilibrium for small-mass objects under the gravitational influence of two massive orbiting bodies. Mathematically, this involves the solution of the restricted three-body problem.

Excerpted from Wikipedia’s “Lagrangian point” article, available under the CC BY-SA 4.0 licence.