Saturn IX
E257499
Saturn IX, officially named Phoebe, is an irregular, retrograde outer moon of Saturn believed to be a captured object from the outer Solar System.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Saturn IX canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2344787 — 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: Saturn IX Context triple: [Phoebe, designation, Saturn IX]
-
A.
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.
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B.
Saturn
Saturn is a gas giant planet known for its extensive and prominent ring system, orbiting the Sun as one of the outer planets in our Solar System.
-
C.
Saturn
Saturn was an American automobile manufacturer created by General Motors as a separate, innovative small-car brand aimed at competing with Japanese imports.
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D.
Saturn
Saturn is an ancient Roman god primarily associated with agriculture, wealth, and time, and was honored in the festival of Saturnalia.
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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: Saturn IX Target entity description: Saturn IX, officially named Phoebe, is an irregular, retrograde outer moon of Saturn believed to be a captured object from the outer Solar System.
-
A.
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.
-
B.
Saturn
Saturn was an American automobile manufacturer created by General Motors as a separate, innovative small-car brand aimed at competing with Japanese imports.
-
C.
Saturn
Saturn is a gas giant planet known for its extensive and prominent ring system, orbiting the Sun as one of the outer planets in our Solar System.
-
D.
Saturn
Saturn is an ancient Roman god primarily associated with agriculture, wealth, and time, and was honored in the festival of Saturnalia.
-
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 (47)
| Predicate | Object |
|---|---|
| instanceOf |
irregular satellite
ⓘ
natural satellite ⓘ outer moon of Saturn ⓘ retrograde satellite ⓘ |
| albedo | low ⓘ |
| alternativeName | S/1899 S 1 ⓘ |
| belongsTo | Solar System ⓘ |
| belongsToGroup | Norse group of Saturnian moons ⓘ |
| belongsToPlanetarySystem | Saturnian system ⓘ |
| catalogDesignation | Saturn IX self-link ⓘ |
| density | approximately 1.6 g/cm³ ⓘ |
| diameter | approximately 213 km ⓘ |
| discoveredBy | William Henry Pickering ⓘ |
| discoveryMethod | ground-based telescope observations ⓘ |
| discoveryYear | 1899 ⓘ |
| eccentricity | approximately 0.163 ⓘ |
| equatorialSurfaceGravity | about 0.05 m/s² ⓘ |
| escapeVelocity | about 0.1 km/s ⓘ |
| firstCloseImagingBy | Cassini–Huygens ⓘ |
| firstCloseImagingYear | 2004 ⓘ |
| geometricAlbedo | about 0.06 ⓘ |
| hasNo |
known geological activity
ⓘ
substantial atmosphere ⓘ |
| hasSpacecraftFlyby | Cassini–Huygens ⓘ |
| inclination | about 175 degrees to the ecliptic ⓘ |
| likelyOrigin | captured object from the outer Solar System ⓘ |
| mass | approximately 8.3×10^18 kg ⓘ |
| meanRadius | approximately 106.5 km ⓘ |
| meanSurfaceTemperature | very low (tens of kelvin) ⓘ |
| namedAfter | Phoebe (figure in Greek mythology) ⓘ |
| officialName | Phoebe ⓘ |
| orbitalClass | irregular ⓘ |
| orbitalDirection | retrograde ⓘ |
| orbitalPeriod | approximately 550 Earth days ⓘ |
| orbits | Saturn ⓘ |
| possibleType | captured centaur or Kuiper belt object ⓘ |
| roleInSystem | source of dark material for Iapetus (hypothesized) ⓘ |
| rotationPeriod | approximately 9.27 hours ⓘ |
| rotationState | not tidally locked to Saturn ⓘ |
| semiMajorAxis | approximately 12.95 million km from Saturn ⓘ |
| shape | roughly spherical but irregular ⓘ |
| spectralType | C-type or D-type like ⓘ |
| surfaceColor | very dark ⓘ |
| surfaceComposition | water ice and dark carbon-rich material ⓘ |
| surfaceFeatures |
covered with dark material
ⓘ
heavily cratered ⓘ large impact basins ⓘ |
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: Saturn IX Description of subject: Saturn IX, officially named Phoebe, is an irregular, retrograde outer moon of Saturn believed to be a captured object from the outer Solar System.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.