Amundsen crater
E827015
Amundsen crater is a large impact feature near the Moon’s south pole, notable for its permanently shadowed regions that may harbor water ice.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Amundsen crater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9808326 — 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: Amundsen crater Context triple: [lunar south polar region, hasNotableCrater, Amundsen crater]
-
A.
Shackleton crater
Shackleton crater is a large, permanently shadowed impact crater near the Moon’s south pole, notable for its potential water ice deposits and importance for future lunar exploration.
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B.
Herschel crater
Herschel crater is a massive, prominent impact crater dominating one hemisphere of Saturn’s moon Mimas, giving the moon its characteristic “Death Star”-like appearance.
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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.
Sechenov crater
Sechenov crater is an impact crater on the Moon located near the large Gagarin crater on the lunar far side.
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E.
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.
- 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: Amundsen crater Target entity description: Amundsen crater is a large impact feature near the Moon’s south pole, notable for its permanently shadowed regions that may harbor water ice.
-
A.
Shackleton crater
Shackleton crater is a large, permanently shadowed impact crater near the Moon’s south pole, notable for its potential water ice deposits and importance for future lunar exploration.
-
B.
Herschel crater
Herschel crater is a massive, prominent impact crater dominating one hemisphere of Saturn’s moon Mimas, giving the moon its characteristic “Death Star”-like appearance.
-
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.
Sechenov crater
Sechenov crater is an impact crater on the Moon located near the large Gagarin crater on the lunar far side.
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E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
lunar impact crater
ⓘ
lunar south polar feature ⓘ |
| formedBy | impact event ⓘ |
| hasAge | pre-Nectarian or Nectarian (heavily degraded) age ⓘ |
| hasAlbedo | low to moderate ⓘ |
| hasColongitude_deg | 45 ⓘ |
| hasContext | part of the Moon’s south polar crater complex ⓘ |
| hasCoordinateSystem | selenographic coordinates ⓘ |
| hasDiameter_km | 103 ⓘ |
| hasEponym | Roald Amundsen ⓘ |
| hasExplorationRelevance | potential landing site for polar missions ⓘ |
| hasFeature |
areas in permanent darkness
ⓘ
cold traps for volatiles ⓘ steep inner walls in places ⓘ |
| hasIlluminationProperty | contains permanently shadowed regions ⓘ |
| hasInteriorFeature |
central ridges
ⓘ
small craterlets ⓘ |
| hasInteriorFloor | relatively level floor ⓘ |
| hasLatitude_deg | -84 ⓘ |
| hasNamingAuthority | International Astronomical Union ⓘ |
| hasObservationBy |
Clementine mission
ⓘ
Lunar Orbiter missions ⓘ
linked to:
Lunar Orbiter program
Lunar Reconnaissance Orbiter ⓘ |
| hasObservationType |
neutron spectroscopy (regional)
ⓘ
optical imaging ⓘ radar measurements ⓘ |
| hasOfficialNameStatus | approved by IAU ⓘ |
| hasPotentialResource |
other trapped volatiles
ⓘ
water ice in permanently shadowed regions ⓘ |
| hasRimType | worn and eroded rim ⓘ |
| hasScientificInterest |
potential water ice deposits
ⓘ
volatile trapping in permanently shadowed regions ⓘ |
| hasSurfaceType | heavily cratered highland terrain ⓘ |
| hasThermalEnvironment | extremely low temperatures in shadowed regions ⓘ |
| hasTopographicVariation | significant relief between rim and floor ⓘ |
| isNear |
Cabeus crater
ⓘ
Moon south pole ⓘ Nobile crater ⓘ Scott crater ⓘ |
| isTargetOfStudy |
future in-situ resource utilization concepts
ⓘ
lunar polar volatiles research ⓘ |
| locatedInRegion | lunar south polar region ⓘ |
| locatedOn | Moon ⓘ |
| namedAfter | Roald Amundsen ⓘ |
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: Amundsen crater Description of subject: Amundsen crater is a large impact feature near the Moon’s south pole, notable for its permanently shadowed regions that may harbor water ice.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.