Irregular satellites
E891897
Irregular satellites are natural moons that follow distant, highly inclined, and often eccentric or retrograde orbits around their parent planets, suggesting they were likely captured rather than formed in place.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Irregular satellites canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10903325 — 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: Irregular satellites Context triple: [S/1899 S 1, belongsToCategory, Irregular satellites]
-
A.
Tethys Trojan moons
The Tethys Trojan moons are small natural satellites of Saturn that share the same orbit as the larger moon Tethys, residing near its stable Lagrange points.
-
B.
Kuiper Belt objects
Kuiper Belt objects are icy celestial bodies orbiting the Sun beyond Neptune, thought to be remnants from the early solar system and the source of many short-period comets.
-
C.
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.
-
D.
Neptune's regular inner satellites
Neptune's regular inner satellites are a closely packed group of small, faint moons orbiting near the planet, shaped and influenced by its strong gravitational and ring system dynamics.
-
E.
Jovian satellite system
The Jovian satellite system is the extensive collection of natural moons orbiting the planet Jupiter, ranging from the large Galilean moons to numerous smaller irregular satellites.
- 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: Irregular satellites Target entity description: Irregular satellites are natural moons that follow distant, highly inclined, and often eccentric or retrograde orbits around their parent planets, suggesting they were likely captured rather than formed in place.
-
A.
Tethys Trojan moons
The Tethys Trojan moons are small natural satellites of Saturn that share the same orbit as the larger moon Tethys, residing near its stable Lagrange points.
-
B.
Kuiper Belt objects
Kuiper Belt objects are icy celestial bodies orbiting the Sun beyond Neptune, thought to be remnants from the early solar system and the source of many short-period comets.
-
C.
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.
-
D.
Neptune's regular inner satellites
Neptune's regular inner satellites are a closely packed group of small, faint moons orbiting near the planet, shaped and influenced by its strong gravitational and ring system dynamics.
-
E.
Jovian satellite system
The Jovian satellite system is the extensive collection of natural moons orbiting the planet Jupiter, ranging from the large Galilean moons to numerous smaller irregular satellites.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object class
ⓘ
natural satellite population ⓘ |
| areClassifiedBy |
direction of motion
ⓘ
dynamical families ⓘ orbital eccentricity ⓘ orbital inclination ⓘ |
| areFoundAround |
Jupiter
NERFINISHED
ⓘ
Mars NERFINISHED ⓘ Neptune NERFINISHED ⓘ Saturn NERFINISHED ⓘ Uranus NERFINISHED ⓘ dwarf planet Eris NERFINISHED ⓘ dwarf planet Haumea NERFINISHED ⓘ dwarf planet Makemake NERFINISHED ⓘ dwarf planet Pluto NERFINISHED ⓘ |
| areInfluencedBy |
Kozai resonance
NERFINISHED
ⓘ
gravitational perturbations from other satellites ⓘ planetary oblateness ⓘ solar perturbations ⓘ |
| areStudiedIn |
celestial mechanics
ⓘ
planetary science ⓘ |
| areUsually |
geologically inactive
ⓘ
irregularly shaped ⓘ small bodies ⓘ |
| contrastsWith | regular satellites ⓘ |
| differsFrom |
regular satellites in distance from planet
ⓘ
regular satellites in eccentricity ⓘ regular satellites in likely formation mechanism ⓘ regular satellites in orbital inclination ⓘ |
| hasOrbitalCharacteristic |
high orbital inclination
ⓘ
large semi-major axis relative to planet’s radius ⓘ long orbital periods ⓘ often high orbital eccentricity ⓘ often retrograde motion ⓘ orbits far from planet’s regular satellite region ⓘ orbits near the planet’s Hill sphere limit ⓘ |
| hasOriginHypothesis |
captured Kuiper belt objects
ⓘ
captured asteroids ⓘ captured objects ⓘ fragments of captured parent bodies ⓘ products of collisional break-up ⓘ |
| helpConstrain |
collisional history of the outer Solar System
ⓘ
models of capture processes in the early Solar System ⓘ models of planetary migration ⓘ |
| oftenBelongTo | collisional families ⓘ |
| orbits |
dwarf planets
ⓘ
giant planets ⓘ terrestrial planets ⓘ |
| typicallyDoNot | form in circumplanetary disk in situ GENERATED ⓘ |
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: Irregular satellites Description of subject: Irregular satellites are natural moons that follow distant, highly inclined, and often eccentric or retrograde orbits around their parent planets, suggesting they were likely captured rather than formed in place.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.