Saturnian moon Hyperion
E620989
Hyperion is an irregularly shaped, chaotically rotating moon of Saturn known for its sponge-like, heavily cratered surface.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Saturnian moon Hyperion canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6829254 — 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: Saturnian moon Hyperion Context triple: [George Phillips Bond, discovered, Saturnian moon Hyperion]
-
A.
Mimas
Mimas is a small, heavily cratered icy moon of Saturn best known for its large Herschel crater, which gives it a distinctive "Death Star"-like appearance.
-
B.
Mimas
Mimas is a giant from Greek mythology, often depicted as one of the monstrous offspring of Gaia who fought the Olympian gods in the Gigantomachy.
-
C.
Malyi Saturn
Malyi Saturn was a major Soviet World War II offensive on the Eastern Front aimed at encircling and destroying Axis forces following the Battle of Stalingrad.
-
D.
Saturn IX
Saturn IX, officially named Phoebe, is an irregular, retrograde outer moon of Saturn believed to be a captured object from the outer Solar System.
-
E.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
- 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: Saturnian moon Hyperion Target entity description: Hyperion is an irregularly shaped, chaotically rotating moon of Saturn known for its sponge-like, heavily cratered surface.
-
A.
Mimas
Mimas is a small, heavily cratered icy moon of Saturn best known for its large Herschel crater, which gives it a distinctive "Death Star"-like appearance.
-
B.
Mimas
Mimas is a giant from Greek mythology, often depicted as one of the monstrous offspring of Gaia who fought the Olympian gods in the Gigantomachy.
-
C.
Malyi Saturn
Malyi Saturn was a major Soviet World War II offensive on the Eastern Front aimed at encircling and destroying Axis forces following the Battle of Stalingrad.
-
D.
Saturn IX
Saturn IX, officially named Phoebe, is an irregular, retrograde outer moon of Saturn believed to be a captured object from the outer Solar System.
-
E.
Aegaeon
Aegaeon is a figure from Greek mythology, often identified with the Hecatoncheires giant Briareus, known for having a hundred hands and fifty heads.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Saturnian moon
ⓘ
irregular moon ⓘ natural satellite ⓘ |
| albedo | geometric albedo about 0.3 ⓘ |
| axialTilt | variable due to chaotic rotation ⓘ |
| belongsToGroup | outer irregularly shaped moons of Saturn ⓘ |
| belongsToPlanetarySystem |
Saturn system
ⓘ
linked to:
Saturnian system
|
| catalogDesignation | Saturn VII ⓘ |
| causesPhenomenon | chaotic rotation due to resonance with Titan ⓘ |
| closeFlybyBy | Cassini on 2005-09-26 ⓘ |
| color | reddish-brown tint ⓘ |
| composition |
low-density porous ice and rock mixture
ⓘ
water ice-rich body ⓘ |
| dimensions | about 360 × 280 × 225 km ⓘ |
| discoveredBy |
George Phillips Bond
ⓘ
William Cranch Bond ⓘ William Lassell ⓘ |
| discoveredUsing | ground-based telescopes ⓘ |
| discoveryDate | 1848-09-16 ⓘ |
| escapeVelocity | about 0.1 km/s ⓘ |
| gravitationalInteractionWith | Titan ⓘ |
| hasNo | substantial atmosphere ⓘ |
| imagedBy |
Cassini spacecraft
ⓘ
linked to:
Cassini–Huygens
Voyager 2 spacecraft ⓘ
linked to:
Voyager 2
|
| mass | about 5.6 × 10^18 kg ⓘ |
| meanDensity | about 0.54 g/cm³ ⓘ |
| meanRadius | approximately 135 km ⓘ |
| namedAfter |
Hyperion (Titan from Greek mythology)
ⓘ
linked to:
Hyperion
|
| orbitalEccentricity | about 0.104 ⓘ |
| orbitalInclination | about 0.43 degrees to Saturn’s equator ⓘ |
| orbitalPeriod | about 21.28 Earth days ⓘ |
| orbitalResonanceType | 4:3 mean-motion resonance with Titan ⓘ |
| orbitalResonanceWith | Titan ⓘ |
| orbits | Saturn ⓘ |
| porosity | very high porosity ⓘ |
| rotationPeriod | non-uniform due to chaotic rotation ⓘ |
| rotationState | chaotic rotation ⓘ |
| semiMajorAxis | about 1,481,000 km from Saturn ⓘ |
| shape | irregular ⓘ |
| surfaceAge | ancient, heavily cratered surface ⓘ |
| surfaceAppearance | sponge-like ⓘ |
| surfaceFeature |
dark material in crater floors
ⓘ
deep, sharp-edged craters ⓘ heavily cratered terrain ⓘ |
| surfaceGravity | about 0.017 m/s² ⓘ |
| surfaceRegolith | very low-density, fluffy regolith ⓘ |
| surfaceTemperature | approximately 70–90 K ⓘ |
| synchronousRotation | false ⓘ |
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: Saturnian moon Hyperion Description of subject: Hyperion is an irregularly shaped, chaotically rotating moon of Saturn known for its sponge-like, heavily cratered surface.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.