Sharpless crater
E497511
Sharpless crater is a prominent impact feature on Mars’s moon Phobos, notable in studies of the moon’s heavily cratered surface and geological history.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sharpless crater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5051066 — 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: Sharpless crater Context triple: [Phobos, hasNotableCrater, Sharpless crater]
-
A.
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.
-
B.
Roche crater
Roche crater is a prominent impact feature on Mars’s moon Phobos, named after the French astronomer Édouard Roche.
-
C.
Pavlov crater
Pavlov crater is a large, heavily eroded impact crater on the Moon’s far side, located near the prominent Gagarin crater.
-
D.
Eddington crater
Eddington crater is a large, lava-flooded lunar impact feature on the Moon’s near side, notable for its heavily eroded rim and partially submerged floor.
-
E.
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.
- 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: Sharpless crater Target entity description: Sharpless crater is a prominent impact feature on Mars’s moon Phobos, notable in studies of the moon’s heavily cratered surface and geological history.
-
A.
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.
-
B.
Roche crater
Roche crater is a prominent impact feature on Mars’s moon Phobos, named after the French astronomer Édouard Roche.
-
C.
Pavlov crater
Pavlov crater is a large, heavily eroded impact crater on the Moon’s far side, located near the prominent Gagarin crater.
-
D.
Eddington crater
Eddington crater is a large, lava-flooded lunar impact feature on the Moon’s near side, notable for its heavily eroded rim and partially submerged floor.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
impact crater
ⓘ
lunar-like crater on Phobos ⓘ |
| belongsToCategory |
Craters on Phobos
ⓘ
Impact craters of the Solar System ⓘ |
| celestialBodyType | surface feature of a natural satellite ⓘ |
| eponymNationality | American ⓘ |
| featureType | impact feature ⓘ |
| hasCoordinates | about 1°N 22°W on Phobos ⓘ |
| hasDiameter | approximately 13 kilometers ⓘ |
| hasEponymOccupation | astronomer ⓘ |
| hasIlluminationCondition | varies strongly with Phobos synchronous rotation ⓘ |
| hasImagingInstrument |
HiRISE camera
ⓘ
linked to:
HiRISE instrument
High Resolution Stereo Camera ⓘ |
| hasInterior | relatively smooth floor ⓘ |
| hasMorphology | simple bowl-shaped crater ⓘ |
| hasParentBody | Phobos ⓘ |
| hasRegolithBehavior | loose material susceptible to mass wasting ⓘ |
| hasRim | raised rim ⓘ |
| hasSurfaceGravityContext | very low gravity environment ⓘ |
| isOnHemisphere |
leading hemisphere of Phobos
ⓘ
northern hemisphere of Phobos ⓘ |
| isProminentOn | heavily cratered surface of Phobos ⓘ |
| locatedIn | Mars system ⓘ |
| locatedOn | Phobos ⓘ |
| nameApprovedBy |
IAU Working Group for Planetary System Nomenclature
ⓘ
linked to:
IAU Working Groups
|
| namedAfter | Solon Irving Sharpless ⓘ |
| namingAuthority | International Astronomical Union ⓘ |
| observedBy |
Mariner 9 spacecraft
ⓘ
linked to:
Mariner 9
Mars Express ⓘ Mars Global Surveyor ⓘ Mars Reconnaissance Orbiter ⓘ Viking 1 Orbiter ⓘ
linked to:
Viking Orbiter
Viking 2 Orbiter ⓘ
linked to:
Viking 2
|
| orbitsWith | Mars ⓘ |
| partOf | Phobos global crater catalog ⓘ |
| relatedBody | Mars ⓘ |
| relatedFeature | Stickney crater ⓘ |
| relativeLocation |
north of Stickney crater
ⓘ
on the anti-Mars side of Phobos ⓘ |
| scientificRelevance |
constraining age of Phobos surface units
ⓘ
understanding cratering rates in the Mars system ⓘ |
| shows |
ejecta deposits around rim
ⓘ
evidence of impact fracturing ⓘ |
| surfaceContext | heavily cratered terrain ⓘ |
| surfaceMaterial | regolith of Phobos ⓘ |
| usedIn |
studies of Phobos geological history
ⓘ
studies of impact processes on small bodies ⓘ |
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: Sharpless crater Description of subject: Sharpless crater is a prominent impact feature on Mars’s moon Phobos, notable in studies of the moon’s heavily cratered surface and geological history.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.