Luna 21 (flyby imaging context)
E563138
Luna 21 (flyby imaging context) was a Soviet Luna program spacecraft whose mission profile included conducting flyby imaging observations of the Moon’s Mare Tranquillitatis region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Luna 21 (flyby imaging context) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6042825 — 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: Luna 21 (flyby imaging context) Context triple: [Mare Tranquillitatis, visitedByMission, Luna 21 (flyby imaging context)]
-
A.
Luna 14
Luna 14 was a Soviet robotic spacecraft launched in 1968 to study the Moon’s gravitational field and test tracking and communication systems for future lunar missions.
-
B.
Luna 11
Luna 11 was a Soviet unmanned spacecraft from the Luna program, launched in 1966 to study the Moon from lunar orbit.
-
C.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
-
D.
Luna 12
Luna 12 was a Soviet unmanned spacecraft launched in 1966 that successfully entered lunar orbit and returned detailed photographs of the Moon’s surface.
-
E.
Luna 17
Luna 17 was a Soviet lunar mission launched in 1970 that successfully delivered the Lunokhod 1 rover to the Moon, achieving the first remote-controlled rover operation on another celestial body.
- 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: Luna 21 (flyby imaging context) Target entity description: Luna 21 (flyby imaging context) was a Soviet Luna program spacecraft whose mission profile included conducting flyby imaging observations of the Moon’s Mare Tranquillitatis region.
-
A.
Luna 14
Luna 14 was a Soviet robotic spacecraft launched in 1968 to study the Moon’s gravitational field and test tracking and communication systems for future lunar missions.
-
B.
Luna 11
Luna 11 was a Soviet unmanned spacecraft from the Luna program, launched in 1966 to study the Moon from lunar orbit.
-
C.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
-
D.
Luna 12
Luna 12 was a Soviet unmanned spacecraft launched in 1966 that successfully entered lunar orbit and returned detailed photographs of the Moon’s surface.
-
E.
Luna 17
Luna 17 was a Soviet lunar mission launched in 1970 that successfully delivered the Lunokhod 1 rover to the Moon, achieving the first remote-controlled rover operation on another celestial body.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Luna program mission
ⓘ
Soviet spacecraft ⓘ lunar lander spacecraft ⓘ |
| carries |
Lunokhod 2 rover
ⓘ
linked to:
Luna 21
|
| carriesInstrument |
radio communication system
ⓘ
television imaging system ⓘ |
| carriesPayload | Lunokhod 2 lunar rover ⓘ |
| communicationBand | radio frequencies ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| destination | Moon ⓘ |
| epoch | Cold War space race era ⓘ |
| imagedRegion |
Mare Serenitatis vicinity
ⓘ
Mare Tranquillitatis ⓘ |
| landingBody | Moon ⓘ |
| landingDate | 1973-01-15 ⓘ |
| landingSite | Le Monnier crater ⓘ |
| launchDate | 1973-01-08 ⓘ |
| launchMass | approximately 5600 kilograms ⓘ |
| launchSite |
Baikonur Cosmodrome
ⓘ
Baikonur Cosmodrome Site 81 ⓘ
linked to:
Baikonur Cosmodrome
|
| launchVehicle |
Proton-K rocket
ⓘ
linked to:
Proton rocket
|
| missionObjective |
conduct flyby imaging observations of Mare Tranquillitatis
ⓘ
conduct lunar surface exploration with Lunokhod 2 ⓘ deliver Lunokhod 2 rover to the lunar surface ⓘ perform imaging of the lunar surface ⓘ study lunar topography ⓘ support radio and laser ranging experiments ⓘ |
| missionType |
lunar flyby imaging of Mare Tranquillitatis
ⓘ
lunar imaging mission ⓘ lunar lander ⓘ lunar rover delivery mission ⓘ lunar surface exploration ⓘ |
| notablePayload | Lunokhod 2 lunar rover ⓘ |
| operator | Soviet space program ⓘ |
| partOf | Soviet lunar exploration efforts ⓘ |
| powerSource |
chemical batteries
ⓘ
solar panels ⓘ |
| predecessor | Luna 20 ⓘ |
| primaryTarget | Moon ⓘ |
| program |
Luna program
ⓘ
linked to:
Luna programme
|
| spaceAgency | Soviet Academy of Sciences ⓘ |
| spacecraftBus | Ye-8 lander bus ⓘ |
| spacecraftType | lander with rover payload ⓘ |
| status | mission completed ⓘ |
| successor | Luna 22 ⓘ |
| targetRegion | Mare Serenitatis ⓘ |
| usesPropulsion | chemical rocket engines ⓘ |
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: Luna 21 (flyby imaging context) Description of subject: Luna 21 (flyby imaging context) was a Soviet Luna program spacecraft whose mission profile included conducting flyby imaging observations of the Moon’s Mare Tranquillitatis region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.