Styx (moon)
E557658
Styx is a small outer moon of Pluto, discovered in 2012, that orbits the dwarf planet in a complex, resonant system with its other moons.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Styx (moon) canonical | 2 |
| Pluto moon Styx | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5948655 — 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: Styx (moon) Context triple: [Hydra (moon), hasOrbitalResonanceWith, Styx (moon)]
-
A.
Carme (moon)
Carme is a retrograde irregular moon of Jupiter and the largest member of the Carme group of Jovian satellites.
-
B.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
-
C.
Jovian moon Taygete
Jovian moon Taygete is a small, irregular, retrograde outer satellite of Jupiter belonging to the Carme group of moons.
-
D.
Methone (Magnesia)
Methone (Magnesia) is an ancient Greek town in the region of Magnesia in Thessaly, known from classical historical and geographical sources.
-
E.
Dysnomia
Dysnomia is the small natural satellite of the distant dwarf planet Eris in the outer Solar System.
- 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: Styx (moon) Target entity description: Styx is a small outer moon of Pluto, discovered in 2012, that orbits the dwarf planet in a complex, resonant system with its other moons.
-
A.
Carme (moon)
Carme is a retrograde irregular moon of Jupiter and the largest member of the Carme group of Jovian satellites.
-
B.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
-
C.
Jovian moon Taygete
Jovian moon Taygete is a small, irregular, retrograde outer satellite of Jupiter belonging to the Carme group of moons.
-
D.
Methone (Magnesia)
Methone (Magnesia) is an ancient Greek town in the region of Magnesia in Thessaly, known from classical historical and geographical sources.
-
E.
Dysnomia
Dysnomia is the small natural satellite of the distant dwarf planet Eris in the outer Solar System.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
moon of Pluto
ⓘ
natural satellite ⓘ |
| albedo | high geometric albedo ⓘ |
| belongsTo |
Kuiper belt
ⓘ
linked to:
Kuiper Belt
|
| belongsToPlanetarySystem | Solar System ⓘ |
| catalogueNumber | Pluto V ⓘ |
| confirmedBy |
New Horizons spacecraft
ⓘ
linked to:
New Horizons
|
| discoveredBy |
Hubble Space Telescope
ⓘ
Mark R. Showalter ⓘ |
| discoveredIn | 2012 ⓘ |
| discoveredInImageDataFrom | Hubble Space Telescope Pluto survey ⓘ |
| discoveredOn | 2012-06-26 ⓘ |
| discoveredUsing | Hubble Space Telescope ⓘ |
| discoveryAnnouncedBy | NASA ⓘ |
| distanceFromSun | approximately 39 astronomical units (via Pluto’s orbit) ⓘ |
| flybyDateBy | New Horizons on 2015-07-14 ⓘ |
| hasAlternativeName |
Pluto V (Styx)
ⓘ
linked to:
Pluto V
|
| hasColor | neutral to slightly bluish ⓘ |
| hasDiscoveryContext | search for rings and small moons around Pluto ⓘ |
| hasMass | very low mass (exact value uncertain) ⓘ |
| hasOrbitalEccentricity | low eccentricity orbit ⓘ |
| hasOrbitalInclination | near Pluto’s equatorial plane ⓘ |
| hasRotationPeriod | not tidally locked to Pluto ⓘ |
| isInnerMoonRelativeTo | Hydra ⓘ |
| isOuterMoonRelativeTo |
Charon
ⓘ
Kerberos ⓘ Nix ⓘ |
| isSmallerThan |
Hydra
ⓘ
Kerberos ⓘ Nix ⓘ |
| meanRadius | approximately 5–7 km ⓘ |
| memberOf | Pluto’s resonant satellite system ⓘ |
| namedAfter |
Styx (mythology)
ⓘ
linked to:
Styx (goddess)
river Styx ⓘ
linked to:
River Styx
|
| namedBy | International Astronomical Union ⓘ |
| orbitalPeriod | approximately 20.16 hours ⓘ |
| orbitalResonanceWith |
Charon
ⓘ
Hydra ⓘ Kerberos ⓘ Nix ⓘ |
| orbits |
Pluto
ⓘ
dwarf planet Pluto ⓘ
linked to:
Pluto
|
| partOf | Pluto system ⓘ |
| provisionalDesignation | S/2012 (134340) 1 ⓘ |
| rotationState | chaotic rotation ⓘ |
| semiMajorAxis | approximately 42,000 km from Pluto ⓘ |
| shape | irregular ⓘ |
| surfaceComposition | water ice (inferred) ⓘ |
| systemicPrimary |
Pluto–Charon barycenter
ⓘ
linked to:
Pluto–Charon system
|
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: Styx (moon) Description of subject: Styx is a small outer moon of Pluto, discovered in 2012, that orbits the dwarf planet in a complex, resonant system with its other moons.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.