Themisto
E643571
Themisto is a small, irregularly shaped outer moon of Jupiter that follows a distant, prograde orbit and is one of the planet’s lesser-known natural satellites.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Themisto canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7099923 — 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: Themisto Context triple: [Jovian satellite system, hasMember, Themisto]
-
A.
Perimedes
Perimedes is a relatively obscure figure in Greek mythology, known primarily through genealogical references linking him to other mythic characters.
-
B.
Deioneus
Deioneus is a figure in Greek mythology, known primarily as a Thessalian king and the husband of Diomede, and is sometimes identified as the father of the hero Cephalus.
-
C.
Dysnomia
Dysnomia is the ancient Greek personification of lawlessness and disorder, representing the breakdown of social and legal norms.
-
D.
Dysnomia
Dysnomia is the small natural satellite of the distant dwarf planet Eris in the outer Solar System.
-
E.
Adrestia
Adrestia is a lesser-known Greek goddess associated with revolt, retribution, and the balance between war and peace.
- 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: Themisto Target entity description: Themisto is a small, irregularly shaped outer moon of Jupiter that follows a distant, prograde orbit and is one of the planet’s lesser-known natural satellites.
-
A.
Perimedes
Perimedes is a relatively obscure figure in Greek mythology, known primarily through genealogical references linking him to other mythic characters.
-
B.
Deioneus
Deioneus is a figure in Greek mythology, known primarily as a Thessalian king and the husband of Diomede, and is sometimes identified as the father of the hero Cephalus.
-
C.
Dysnomia
Dysnomia is the small natural satellite of the distant dwarf planet Eris in the outer Solar System.
-
D.
Dysnomia
Dysnomia is the ancient Greek personification of lawlessness and disorder, representing the breakdown of social and legal norms.
-
E.
Adrestia
Adrestia is a lesser-known Greek goddess associated with revolt, retribution, and the balance between war and peace.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
moon of Jupiter
ⓘ
natural satellite ⓘ outer moon of Jupiter ⓘ |
| absoluteMagnitude | about 11.5 ⓘ |
| albedo | low ⓘ |
| belongsTo | Jupiter’s irregular satellite population ⓘ |
| belongsToPlanetarySystem | Jovian system NERFINISHED ⓘ |
| category |
Irregular satellites
NERFINISHED
ⓘ
Moons of Jupiter ⓘ Prograde irregular satellites ⓘ |
| celestialBody | Jupiter NERFINISHED ⓘ |
| designation | Jupiter XVIII NERFINISHED ⓘ |
| discoveredBy |
Charles T. Kowal
NERFINISHED
ⓘ
Elizabeth Roemer NERFINISHED ⓘ |
| discoverySite | Palomar Observatory NERFINISHED ⓘ |
| discoveryYear | 1975 ⓘ |
| distanceFromSun_AU | about 5.2 via Jupiter’s orbit ⓘ |
| gravitationallyBoundTo | Jupiter NERFINISHED ⓘ |
| hasAtmosphere | no significant atmosphere ⓘ |
| hasRotation | synchronousRotationUnknown ⓘ |
| isLessKnownThan | Galilean moons NERFINISHED ⓘ |
| isNonSpherical | true ⓘ |
| isOuterSatelliteOf | Jupiter NERFINISHED ⓘ |
| isPartOf | Solar System NERFINISHED ⓘ |
| lostAfterDiscovery | true ⓘ |
| massEstimate | very low ⓘ |
| meanDiameter_km | about 8 ⓘ |
| meanRadius_km | about 4 ⓘ |
| namedAfter |
Themisto (mythology)
NERFINISHED
ⓘ
Themisto, a figure in Greek mythology associated with Zeus NERFINISHED ⓘ |
| observationalStatus | faint ⓘ |
| orbitalDirection | prograde ⓘ |
| orbitalEccentricity | about 0.24 ⓘ |
| orbitalInclination_degrees | about 43 ⓘ |
| orbitalPeriod_days | about 129.9 ⓘ |
| orbits | Jupiter NERFINISHED ⓘ |
| provisionalDesignation |
S/1975 J 1
NERFINISHED
ⓘ
S/2000 J 1 NERFINISHED ⓘ |
| recoveredBy |
David C. Jewitt
NERFINISHED
ⓘ
Jan T. Kleyna NERFINISHED ⓘ Scott S. Sheppard NERFINISHED ⓘ Yanga R. Fernandez NERFINISHED ⓘ |
| recoveredYear | 2000 ⓘ |
| semiMajorAxis_km | about 7390000 ⓘ |
| shape | irregular ⓘ |
| surfaceComposition | likely dark, carbon-rich material ⓘ |
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: Themisto Description of subject: Themisto is a small, irregularly shaped outer moon of Jupiter that follows a distant, prograde orbit and is one of the planet’s lesser-known natural satellites.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.