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HandWiki. Lagrangian Point. Encyclopedia. Available online: https://encyclopedia.pub/entry/35079 (accessed on 16 September 2026).
HandWiki. Lagrangian Point. Encyclopedia. Available at: https://encyclopedia.pub/entry/35079. Accessed September 16, 2026.
HandWiki. "Lagrangian Point" Encyclopedia, https://encyclopedia.pub/entry/35079 (accessed September 16, 2026).
HandWiki. (2022, November 17). Lagrangian Point. In Encyclopedia. https://encyclopedia.pub/entry/35079
HandWiki. "Lagrangian Point." Encyclopedia. Web. 17 November, 2022.
Lagrangian Point
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The content is sourced from: https://handwiki.org/wiki/Astronomy:Lagrangian_point

In celestial mechanics, the Lagrangian points (/ləˈɡrɑːndʒiən/ also Lagrange points, L-points, or libration points) are the points near two large bodies in orbit where a smaller object will maintain its position relative to the large orbiting bodies. At other locations, a small object would go into its own orbit around one of the large bodies, but at the Lagrangian points the gravitational forces of the two large bodies, the centripetal force of orbital motion, and (for certain points) the Coriolis acceleration all match up in a way that cause the small object to maintain a stable or nearly stable position relative to the large bodies. There are five such points, labeled L1 to L5, all in the orbital plane of the two large bodies, for each given combination of two orbital bodies. For instance, there are five Lagrangian points L1 to L5 for the Sun–Earth system, and in a similar way there are five different Lagrangian points for the Earth–Moon system. L1, L2, and L3 are on the line through the centers of the two large bodies, while L4 and L5 each act as the third vertex of an equilateral triangle formed with the centers of the two large bodies. L4 and L5 are stable, which implies that objects can orbit around them in a rotating coordinate system tied to the two large bodies. Several planets have trojan satellites near their L4 and L5 points with respect to the Sun. Jupiter has more than a million of these trojans. Artificial satellites have been placed at L1 and L2 with respect to the Sun and Earth, and with respect to the Earth and the Moon. The Lagrangian points have been proposed for uses in space exploration.

equilateral centripetal small object

References

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