L1
E722104
L1 is the first Sun–Earth Lagrange point, a position in space where the gravitational forces of the Sun and Earth balance to allow a spacecraft to maintain a stable orbit between them.
All labels observed (1)
| Label | Occurrences |
|---|---|
| L1 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8264693 — 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: L1 Context triple: [Sun–Earth L1 Lagrange point, labelInSystem, L1]
-
A.
L1
L1 is the top professional football league in France, featuring the country’s highest-level clubs in the sport.
-
B.
L1-SL
L1-SL is the station code used to identify the San Lázaro stop on Line 1 of the Mexico City Metro system.
-
C.
L1BC
L1BC is a regional Canadian soccer league that operates as part of the League1 Canada structure, providing a pro-am development platform for players in British Columbia.
-
D.
L1O
L1O is a Canadian pro-am soccer league in Ontario that forms part of the country’s third tier in the men’s and women’s soccer pyramid.
-
E.
L
L is a Swedish liberal political party known for advocating individual freedom, social responsibility, and pro-European policies.
- 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: L1 Target entity description: L1 is the first Sun–Earth Lagrange point, a position in space where the gravitational forces of the Sun and Earth balance to allow a spacecraft to maintain a stable orbit between them.
-
A.
L1
L1 is the top professional football league in France, featuring the country’s highest-level clubs in the sport.
-
B.
L1-SL
L1-SL is the station code used to identify the San Lázaro stop on Line 1 of the Mexico City Metro system.
-
C.
L1BC
L1BC is a regional Canadian soccer league that operates as part of the League1 Canada structure, providing a pro-am development platform for players in British Columbia.
-
D.
L1O
L1O is a Canadian pro-am soccer league in Ontario that forms part of the country’s third tier in the men’s and women’s soccer pyramid.
-
E.
L
The L is a Chicago 'L' rapid transit line that serves the city’s West Side and western suburbs as part of the Chicago Transit Authority system.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Lagrange point
ⓘ
Sun–Earth Lagrange point ⓘ location in space ⓘ |
| alsoKnownAs |
SE-L1
ⓘ
Sun–Earth L1 ⓘ
linked to:
Sun–Earth L1 Lagrange point
|
| belongsTo | five Sun–Earth Lagrange points ⓘ |
| coordinateSystem | often described in barycentric rotating coordinates ⓘ |
| distanceFromEarth |
about 0.01 astronomical units toward the Sun
ⓘ
about 1.5 million kilometers toward the Sun ⓘ |
| distanceFromSun | about 0.99 astronomical units ⓘ |
| governedBy |
Newtonian gravity with perturbations
ⓘ
restricted three-body problem ⓘ |
| hasNeighbor |
Sun–Earth L2
ⓘ
Sun–Earth L3 ⓘ |
| hasOrbitType |
Lissajous orbit
ⓘ
halo orbit ⓘ |
| hasOrdinalNumber | 1 ⓘ |
| hasPosition | between the Sun and the Earth ⓘ |
| hasProperty |
allows spacecraft to maintain a quasi-stable orbit
ⓘ
collinear with the Sun and the Earth ⓘ continuous line of sight to both Sun and Earth ⓘ enables continuous view of the Sun ⓘ fixed position in rotating Sun–Earth frame ⓘ gravitational forces of Sun and Earth approximately balance ⓘ inside Earth’s orbit around the Sun ⓘ low-light interference from Earth and Moon compared to low Earth orbit ⓘ not fixed in inertial frame ⓘ on the Sun–Earth line ⓘ requires precise navigation for insertion into halo or Lissajous orbit ⓘ requires station-keeping maneuvers ⓘ |
| locatedIn | Sun–Earth system ⓘ |
| monitors |
interplanetary magnetic field near Earth
ⓘ
solar wind ⓘ |
| referenceFrame | rotating frame co-rotating with Earth around the Sun ⓘ |
| relevantTo |
astrodynamics
ⓘ
mission design for solar observatories ⓘ space weather forecasting infrastructure ⓘ |
| spacecraftLocatedAt |
ACE
ⓘ
DSCOVR ⓘ
linked to:
Deep Space Climate Observatory
Genesis (past mission) ⓘ SOHO ⓘ Wind ⓘ |
| stabilityType | unstable equilibrium point ⓘ |
| usedFor |
early warning of solar storms
ⓘ
heliophysics research ⓘ solar observation ⓘ space weather monitoring ⓘ |
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: L1 Description of subject: L1 is the first Sun–Earth Lagrange point, a position in space where the gravitational forces of the Sun and Earth balance to allow a spacecraft to maintain a stable orbit between them.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.