Lagrange points

E645103

Lagrange point celestial mechanics concept orbital mechanics concept

Lagrange points are specific positions in space where the gravitational forces of two large bodies and the orbital motion of a smaller object balance so that the smaller object can remain in a stable or semi-stable location relative to the two larger bodies.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
Lagrange point	2
Lagrange points canonical	2

How this entity was disambiguated

This entity first appeared as the object of triple T7150263 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Lagrange points
Context triple: [Newtonian celestial mechanics, explains, Lagrange points]

A. Lissajous orbit
A Lissajous orbit is a stable, looping three-dimensional trajectory around a Lagrange point, commonly used by space observatories to maintain a relatively constant position with respect to Earth and the Sun.
B. Sun–Earth L1 Lagrange point
The Sun–Earth L1 Lagrange point is a gravitationally stable location between the Earth and the Sun where spacecraft can maintain a relatively fixed position with minimal fuel, ideal for continuous solar and space weather observations.
C. Laplace resonance
Laplace resonance is a three-body orbital resonance in which the orbital periods of Jupiter’s moons Io, Europa, and Ganymede are linked in a precise 1:2:4 ratio, strongly affecting their dynamics and internal heating.
D. Laplace plane
The Laplace plane is the equilibrium reference plane about which a satellite’s orbital plane precesses under the combined influence of a planet’s oblateness and external gravitational perturbations.
E. Sun–Earth L2
Sun–Earth L2 is a gravitationally stable point in space located beyond Earth's orbit where the combined gravity of the Sun and Earth allows spacecraft, such as the James Webb Space Telescope, to maintain a relatively constant position with minimal fuel use.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Lagrange points
Target entity description: Lagrange points are specific positions in space where the gravitational forces of two large bodies and the orbital motion of a smaller object balance so that the smaller object can remain in a stable or semi-stable location relative to the two larger bodies.

A. Lissajous orbit
A Lissajous orbit is a stable, looping three-dimensional trajectory around a Lagrange point, commonly used by space observatories to maintain a relatively constant position with respect to Earth and the Sun.
B. Sun–Earth L1 Lagrange point
The Sun–Earth L1 Lagrange point is a gravitationally stable location between the Earth and the Sun where spacecraft can maintain a relatively fixed position with minimal fuel, ideal for continuous solar and space weather observations.
C. Laplace resonance
Laplace resonance is a three-body orbital resonance in which the orbital periods of Jupiter’s moons Io, Europa, and Ganymede are linked in a precise 1:2:4 ratio, strongly affecting their dynamics and internal heating.
D. Laplace plane
The Laplace plane is the equilibrium reference plane about which a satellite’s orbital plane precesses under the combined influence of a planet’s oblateness and external gravitational perturbations.
E. Sun–Earth L2
Sun–Earth L2 is a gravitationally stable point in space located beyond Earth's orbit where the combined gravity of the Sun and Earth allows spacecraft, such as the James Webb Space Telescope, to maintain a relatively constant position with minimal fuel use.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	Lagrange point ⓘ celestial mechanics concept ⓘ orbital mechanics concept ⓘ
alsoCalled	collinear Lagrange point ⓘ collinear Lagrange point ⓘ collinear Lagrange point ⓘ triangular Lagrange point ⓘ triangular Lagrange point ⓘ
appliesTo	restricted three-body problem ⓘ
characterizedBy	balance of gravitational and centrifugal forces ⓘ
enables	Lissajous orbits NERFINISHED ⓘ halo orbits ⓘ
field	astrodynamics ⓘ astronomy ⓘ physics ⓘ
firstDescribedBy	Joseph-Louis Lagrange NERFINISHED ⓘ
firstDescribedIn	1772 ⓘ
formsShape	equilateral triangle with two massive bodies ⓘ equilateral triangle with two massive bodies ⓘ
governedBy	Newtonian gravity ⓘ rotating reference frame dynamics ⓘ
hasApplication	Earth–Moon system NERFINISHED ⓘ Earth–Sun system NERFINISHED ⓘ Sun–Jupiter system NERFINISHED ⓘ
hasDefinition	position in a three-body system where gravitational and centrifugal forces balance ⓘ
hasMember	L1 ⓘ L2 ⓘ L3 NERFINISHED ⓘ L4 ⓘ L5 NERFINISHED ⓘ
hasQuantity	five distinct points ⓘ
namedAfter	Joseph-Louis Lagrange NERFINISHED ⓘ
positioned	at 60 degrees ahead of secondary body in its orbit ⓘ at 60 degrees behind secondary body in its orbit ⓘ on line connecting two massive bodies ⓘ on line connecting two massive bodies ⓘ on line connecting two massive bodies ⓘ
requires	third body of negligible mass ⓘ two massive bodies ⓘ
stabilityType	conditionally stable equilibrium ⓘ conditionally stable equilibrium ⓘ unstable equilibrium ⓘ unstable equilibrium ⓘ unstable equilibrium ⓘ
usedIn	satellite positioning ⓘ space mission design ⓘ space observatory placement ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Newtonian celestial mechanics → explains → Lagrange points ⓘ

Jacobi integral → relatedTo → Lagrange points ⓘ

Lissajous orbit → orbitsAround → Lagrange points ⓘ

this entity surface form: Lagrange point

Lissajous orbit → isRelatedTo → Lagrange points ⓘ