Kerberos (moon)
E557659
Kerberos is a small, irregularly shaped outer moon of the dwarf planet Pluto, discovered in 2011 as part of the Pluto system’s complex family of satellites.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kerberos (moon) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5948656 — 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: Kerberos (moon) Context triple: [Hydra (moon), hasOrbitalResonanceWith, Kerberos (moon)]
-
A.
Carme (moon)
Carme is a retrograde irregular moon of Jupiter and the largest member of the Carme group of Jovian satellites.
-
B.
Kepler (lunar crater)
Kepler (lunar crater) is a prominent, relatively young impact crater on the Moon’s near side, noted for its bright ray system and association with the astronomer Johannes Kepler.
-
C.
von Kármán crater on the Moon
Von Kármán crater on the Moon is a large impact crater on the lunar far side, notable as the landing site of China’s Chang’e 4 mission and named in honor of aerospace engineer Theodore von Kármán.
-
D.
Baade lunar crater
Baade lunar crater is a large impact feature on the Moon’s far side named in honor of German astronomer Walter Baade.
-
E.
Levi-Civita crater
Levi-Civita crater is a large, heavily eroded impact crater on the Moon’s far side, named after Italian mathematician Tullio Levi-Civita.
- 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: Kerberos (moon) Target entity description: Kerberos is a small, irregularly shaped outer moon of the dwarf planet Pluto, discovered in 2011 as part of the Pluto system’s complex family of satellites.
-
A.
Carme (moon)
Carme is a retrograde irregular moon of Jupiter and the largest member of the Carme group of Jovian satellites.
-
B.
Kepler (lunar crater)
Kepler (lunar crater) is a prominent, relatively young impact crater on the Moon’s near side, noted for its bright ray system and association with the astronomer Johannes Kepler.
-
C.
von Kármán crater on the Moon
Von Kármán crater on the Moon is a large impact crater on the lunar far side, notable as the landing site of China’s Chang’e 4 mission and named in honor of aerospace engineer Theodore von Kármán.
-
D.
Baade lunar crater
Baade lunar crater is a large impact feature on the Moon’s far side named in honor of German astronomer Walter Baade.
-
E.
Levi-Civita crater
Levi-Civita crater is a large, heavily eroded impact crater on the Moon’s far side, named after Italian mathematician Tullio Levi-Civita.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
moon of Pluto
ⓘ
natural satellite ⓘ outer moon ⓘ |
| albedo | high geometric albedo ⓘ |
| belongsToCategory |
Moons of Pluto
NERFINISHED
ⓘ
Outer Solar System moon ⓘ Trans‑Neptunian satellite ⓘ |
| celestialBodyType | natural satellite ⓘ |
| dimensions | approximately 12 kilometers by 4.5 kilometers ⓘ |
| discoveredBy |
Hubble Space Telescope
NERFINISHED
ⓘ
Mark R. Showalter NERFINISHED ⓘ |
| discoveredInYear | 2011 ⓘ |
| discoveryAnnouncementDate | 2011-07-20 ⓘ |
| discoveryContext | search for small moons and rings around Pluto ⓘ |
| discoveryMethod | space telescope imaging ⓘ |
| distanceFromPluto | between Nix and Hydra ⓘ |
| exploredBy | New Horizons spacecraft NERFINISHED ⓘ |
| flybyDate | July 2015 ⓘ |
| hasNumberOfKnownMoonsInSystem | one of five known moons of Pluto ⓘ |
| imagedBy | New Horizons LORRI camera NERFINISHED ⓘ |
| locatedIn |
Kuiper belt
NERFINISHED
ⓘ
Pluto system NERFINISHED ⓘ |
| mass | very low mass ⓘ |
| meanRadius | approximately 6 kilometers ⓘ |
| memberOf | Pluto system NERFINISHED ⓘ |
| namedAfter |
Cerberus
NERFINISHED
ⓘ
mythological three‑headed dog guarding the underworld ⓘ |
| nameLanguageForm | Greek form of Cerberus ⓘ |
| orbitalDirection | prograde ⓘ |
| orbitalPeriod | approximately 32.2 Earth days ⓘ |
| orbitalResonance |
near 1:4 resonance with Nix
ⓘ
near 1:5 resonance with Charon ⓘ near 1:6 resonance with Hydra ⓘ |
| orbits | Pluto NERFINISHED ⓘ |
| partOf |
Pluto–Charon system
NERFINISHED
ⓘ
Pluto’s satellite system ⓘ |
| provisionalDesignation | S/2011 (134340) 1 NERFINISHED ⓘ |
| relativeSizeInSystem |
larger than Styx
ⓘ
smaller than Nix and Hydra ⓘ |
| rotationState | chaotic rotation ⓘ |
| shape |
irregular
ⓘ
likely bilobed ⓘ |
| surfaceColor | bright ⓘ |
| surfaceComposition | water ice rich ⓘ |
| systemHasPrimary |
Charon
NERFINISHED
ⓘ
Pluto NERFINISHED ⓘ |
| tidalLocking | not tidally locked to Pluto ⓘ |
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: Kerberos (moon) Description of subject: Kerberos is a small, irregularly shaped outer moon of the dwarf planet Pluto, discovered in 2011 as part of the Pluto system’s complex family of satellites.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Hydra (moon)
subject surface form:
Hydra (moon)