Stickney crater
E492458
Stickney crater is the largest and most prominent impact crater on Mars's moon Phobos, dominating much of its small surface.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stickney crater canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5051063 — 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: Stickney crater Context triple: [Phobos, hasNotableCrater, Stickney crater]
-
A.
Pavlov crater
Pavlov crater is a large, heavily eroded impact crater on the Moon’s far side, located near the prominent Gagarin crater.
-
B.
Fizeau crater
Fizeau crater is a large impact crater on the far side of the Moon, named in honor of French physicist Hippolyte Fizeau.
-
C.
Endurance Crater
Endurance Crater is a Martian impact crater on Meridiani Planum that was extensively studied by NASA’s Opportunity rover for insights into the planet’s geologic and aqueous history.
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D.
Occator Crater
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.
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E.
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.
- 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: Stickney crater Target entity description: Stickney crater is the largest and most prominent impact crater on Mars's moon Phobos, dominating much of its small surface.
-
A.
Pavlov crater
Pavlov crater is a large, heavily eroded impact crater on the Moon’s far side, located near the prominent Gagarin crater.
-
B.
Fizeau crater
Fizeau crater is a large impact crater on the far side of the Moon, named in honor of French physicist Hippolyte Fizeau.
-
C.
Endurance Crater
Endurance Crater is a Martian impact crater on Meridiani Planum that was extensively studied by NASA’s Opportunity rover for insights into the planet’s geologic and aqueous history.
-
D.
Occator Crater
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.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
impact crater ⓘ |
| age | ancient ⓘ |
| albedo | low ⓘ |
| associatedWithFeatureOnPhobos | groove systems ⓘ |
| belongsToCategory |
Craters on Phobos
ⓘ
Impact craters of the Solar System ⓘ |
| catalogDesignation | Stickney ⓘ |
| centralLatitudeOnPhobos | near equatorial region ⓘ |
| coordinateSystem | used as reference feature on Phobos maps ⓘ |
| diameter |
about 5.6 miles
ⓘ
approximately 9 kilometers ⓘ |
| discoveredBy | Asaph Hall ⓘ |
| discoveryMethod | telescopic observation ⓘ |
| floorTopography | uneven and covered with smaller craters ⓘ |
| formationProcess | impact event ⓘ |
| hasFeature |
central region with regolith
ⓘ
grooves radiating across Phobos ⓘ slumped walls ⓘ |
| hostBody |
inner Martian moon Phobos
ⓘ
linked to:
Phobos
|
| hostBodyType | natural satellite ⓘ |
| imagedBy |
Mars Express
ⓘ
Mars Global Surveyor ⓘ Mars Reconnaissance Orbiter ⓘ Viking 1 Orbiter ⓘ
linked to:
Viking Orbiter
Viking 2 Orbiter ⓘ
linked to:
Viking 2
|
| impactEnergyImplication | suggests Phobos is not monolithic solid rock ⓘ |
| influences | stress patterns in Phobos ⓘ |
| isLargestCraterOn | Phobos ⓘ |
| locatedIn | Mars system ⓘ |
| locatedOn | Phobos ⓘ |
| mayHaveCaused | global fracturing of Phobos ⓘ |
| namedAfter | Chloe Angeline Stickney Hall ⓘ |
| nameHonors | the wife of astronomer Asaph Hall ⓘ |
| nameLanguage | English ⓘ |
| occupiesFractionOfSurfaceOf | about half of the surface of Phobos ⓘ |
| orbitsWithHostBody | Mars ⓘ |
| regolithPresence | loose dusty material on floor ⓘ |
| relatedToHypothesis | Phobos may be a rubble pile or fractured body ⓘ |
| scientificInterest | key to understanding Phobos structure and origin ⓘ |
| shapeInfluenceOnBody | gives Phobos an elongated appearance ⓘ |
| solarSystemBodyType | feature on small irregular moon ⓘ |
| surfaceGravityContext | very low gravity environment ⓘ |
| surfaceType | heavily cratered interior ⓘ |
| visibility | dominant feature in images of Phobos ⓘ |
| visibleFrom | spacecraft orbiting Mars ⓘ |
| wallDegradation | significant due to subsequent impacts and landslides ⓘ |
| wallSlope | shallow due to low gravity and regolith movement ⓘ |
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: Stickney crater Description of subject: Stickney crater is the largest and most prominent impact crater on Mars's moon Phobos, dominating much of its small surface.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.