Occator Crater
E117410
Occator Crater is a prominent impact crater on the dwarf planet Ceres, best known for its bright salt deposits that suggest past subsurface brine activity.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cerealia Facula | 1 |
| Occator Crater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T992598 — 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: Occator Crater Context triple: [Ceres, surfaceFeature, Occator Crater]
-
A.
Jezero Crater
Jezero Crater is an ancient impact basin on Mars that once hosted a lake and river delta, making it a prime site for studying past habitability and searching for signs of ancient life.
-
B.
Ernst Mach crater
Ernst Mach crater is a large impact crater on the Moon’s far side named in honor of the Austrian physicist and philosopher Ernst Mach.
-
C.
Schwarzschild crater
Schwarzschild crater is a large impact crater on the far side of the Moon, notable for its heavily eroded rim and complex interior features.
-
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.
Gale Crater
Gale Crater is a large impact crater on Mars that has been extensively explored for its layered geological history and past habitability clues.
- 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: Occator Crater Target entity description: Occator Crater is a prominent impact crater on the dwarf planet Ceres, best known for its bright salt deposits that suggest past subsurface brine activity.
-
A.
Jezero Crater
Jezero Crater is an ancient impact basin on Mars that once hosted a lake and river delta, making it a prime site for studying past habitability and searching for signs of ancient life.
-
B.
Ernst Mach crater
Ernst Mach crater is a large impact crater on the Moon’s far side named in honor of the Austrian physicist and philosopher Ernst Mach.
-
C.
Schwarzschild crater
Schwarzschild crater is a large impact crater on the far side of the Moon, notable for its heavily eroded rim and complex interior features.
-
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.
Gale Crater
Gale Crater is a large impact crater on Mars that has been extensively explored for its layered geological history and past habitability clues.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
geological feature
ⓘ
impact crater ⓘ surface feature on Ceres ⓘ |
| ageEstimate | approximately 20 million years ⓘ |
| associatedWith |
brine upwelling
ⓘ
hydrothermal activity hypotheses ⓘ |
| brightnessContrast | bright deposits contrast with dark surrounding terrain ⓘ |
| centralFeature | Cerealia Tholus ⓘ |
| contains |
Occator Crater
self-linksurface differs
ⓘ
surface form:
Cerealia Facula
Vinalia Faculae ⓘ |
| coordinatesApprox | 20°N 239°E (planetocentric) ⓘ |
| discoveredBy | Dawn spacecraft imaging ⓘ |
| evidenceFor |
cryovolcanic processes on Ceres
ⓘ
past subsurface brine activity ⓘ recent geological activity on Ceres ⓘ |
| floorShows |
evidence of uplift
ⓘ
extensive fracturing ⓘ |
| hasAlbedo | unusually high in bright spots ⓘ |
| hasDepth | approximately 4 kilometers ⓘ |
| hasDiameter | approximately 92 kilometers ⓘ |
| hasNotableFeature |
bright spots
ⓘ
central dome ⓘ central pit ⓘ faculae ⓘ fractured floor ⓘ salt deposits ⓘ |
| imagedBy | Dawn Framing Camera ⓘ |
| locatedIn | asteroid belt ⓘ |
| locatedOn | Ceres ⓘ |
| nameApprovedBy | International Astronomical Union ⓘ |
| namedAfter | Roman agricultural deity Occator ⓘ |
| observedBy |
Dawn mission
ⓘ
surface form:
Dawn spacecraft
|
| partOf | surface of Ceres ⓘ |
| saltDepositsIndicate | long-lived internal water reservoir on Ceres ⓘ |
| saltDepositsOrigin | freezing of ascending brines ⓘ |
| spectrallyDistinctFrom | average Ceres surface ⓘ |
| studiedBy |
NASA
ⓘ
planetary scientists ⓘ |
| surfaceCompositionIncludes |
ammonium chloride
ⓘ
magnesium sulfate ⓘ sodium carbonate ⓘ water ice traces ⓘ |
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: Occator Crater Description of subject: Occator Crater is a prominent impact crater on the dwarf planet Ceres, best known for its bright salt deposits that suggest past subsurface brine activity.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cerealia Facula