Laplace resonance
E165431
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Laplace 1:2:4 resonance | 1 |
| Laplace resonance canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1443442 — 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: Laplace resonance Context triple: [Galilean moons, areLockedIn, Laplace resonance]
-
A.
Gauss’s planetary equations
Gauss’s planetary equations are a set of differential equations in celestial mechanics that describe how a planet’s orbital elements change over time under the influence of perturbing forces.
-
B.
Galilean moons
The Galilean moons are the four largest satellites of Jupiter—Io, Europa, Ganymede, and Callisto—known for their diverse geologies and significance in the study of planetary systems and potential extraterrestrial habitability.
-
C.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
-
D.
Lagrange’s planetary equations
Lagrange’s planetary equations are a set of differential equations in celestial mechanics that describe how the orbital elements of a body evolve over time under perturbing forces.
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E.
Adams ring
Adams ring is the faint, outermost known ring of Neptune, notable for its bright, clumpy arcs.
- 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: Laplace resonance Target entity description: 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.
-
A.
Gauss’s planetary equations
Gauss’s planetary equations are a set of differential equations in celestial mechanics that describe how a planet’s orbital elements change over time under the influence of perturbing forces.
-
B.
Galilean moons
The Galilean moons are the four largest satellites of Jupiter—Io, Europa, Ganymede, and Callisto—known for their diverse geologies and significance in the study of planetary systems and potential extraterrestrial habitability.
-
C.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
-
D.
Lagrange’s planetary equations
Lagrange’s planetary equations are a set of differential equations in celestial mechanics that describe how the orbital elements of a body evolve over time under perturbing forces.
-
E.
Adams ring
Adams ring is the faint, outermost known ring of Neptune, notable for its bright, clumpy arcs.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
orbital resonance
ⓘ
three-body resonance ⓘ |
| affects |
orbital dynamics of Europa
ⓘ
orbital dynamics of Ganymede ⓘ orbital dynamics of Io ⓘ |
| category |
celestial mechanics
ⓘ
planetary science ⓘ |
| causes | tidal heating in Io ⓘ |
| consequence |
subsurface ocean maintenance on Europa
ⓘ
volcanic activity on Io ⓘ |
| discoveredInContextOf | motion of Jupiter’s satellites ⓘ |
| dynamicalEffect |
couples orbital longitudes of Io, Europa, and Ganymede
ⓘ
prevents rapid tidal circularization of Io’s orbit ⓘ |
| enhances | tidal heating in Europa ⓘ |
| hasAlternativeName |
Laplace resonance
ⓘ
surface form:
Laplace 1:2:4 resonance
|
| hasPhaseRelation | l_Io - 3 l_Europa + 2 l_Ganymede librates ⓘ |
| hostPlanet | Jupiter ⓘ |
| influences |
internal structure of Galilean moons
ⓘ
thermal evolution of Europa ⓘ thermal evolution of Io ⓘ |
| involvesBody |
Europa
ⓘ
Ganymede ⓘ Io ⓘ |
| isExampleOf |
mean-motion resonance
ⓘ
multi-satellite resonance ⓘ |
| isPrototypeFor | resonant chains in exoplanetary systems ⓘ |
| maintains |
orbital eccentricity of Europa
ⓘ
orbital eccentricity of Ganymede ⓘ orbital eccentricity of Io ⓘ |
| mathematicallyDescribedBy | Laplace’s theory of satellite motion ⓘ |
| meanMotionRelation | n_Io - 3 n_Europa + 2 n_Ganymede ≈ 0 ⓘ |
| namedAfter | Pierre-Simon Laplace ⓘ |
| observedBy | ground-based telescopes ⓘ |
| occursInSystem | Jovian satellite system ⓘ |
| orbitalPeriodRatio | Io:Europa:Ganymede = 1:2:4 ⓘ |
| relatedTo |
Galilean moons
ⓘ
Laplace plane ⓘ tidal dissipation ⓘ |
| relevance | habitability of icy moons ⓘ |
| requires |
gravitational interactions among Io, Europa, and Ganymede
ⓘ
non-zero orbital eccentricities ⓘ |
| stabilizes | long-term configuration of Io, Europa, and Ganymede ⓘ |
| studiedBy |
Galileo spacecraft
ⓘ
Juno spacecraft ⓘ
surface form:
Juno mission
Voyager program ⓘ
surface form:
Voyager missions
|
| systemType | 1:2:4 mean-motion resonance chain ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Laplace resonance Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Laplace 1:2:4 resonance