Luna 2
E26923
Luna 2 was a Soviet space probe that became the first human-made object to reach the Moon, marking a major milestone in early space exploration.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Luna 2 canonical | 12 |
| Luna E-1A | 1 |
| Ye-1 series lunar probes | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T206464 — 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 2 Context triple: [Moon, firstSuccessfulImpactBy, Luna 2]
-
A.
Luna 1
Luna 1 was a Soviet spacecraft launched in 1959 that became the first human-made object to reach the vicinity of the Moon and enter a heliocentric orbit.
-
B.
Vanguard 1 satellite
Vanguard 1 satellite is an early American artificial Earth satellite launched in 1958 that became the fourth human-made object in space and the oldest still in orbit, used primarily for geophysical and atmospheric research.
-
C.
Pioneer 10
Pioneer 10 is a NASA space probe launched in 1972 that became the first spacecraft to travel through the asteroid belt and make a direct observation of Jupiter before heading into interstellar space.
-
D.
Pioneer 11
Pioneer 11 is a NASA space probe launched in 1973 that conducted pioneering flybys of Jupiter and Saturn, helping to open the outer solar system to exploration.
-
E.
Apollo 11
Apollo 11 was the historic 1969 spaceflight that first landed humans on the Moon and safely returned them to Earth.
- 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 2 Target entity description: Luna 2 was a Soviet space probe that became the first human-made object to reach the Moon, marking a major milestone in early space exploration.
-
A.
Luna 1
Luna 1 was a Soviet spacecraft launched in 1959 that became the first human-made object to reach the vicinity of the Moon and enter a heliocentric orbit.
-
B.
Vanguard 1 satellite
Vanguard 1 satellite is an early American artificial Earth satellite launched in 1958 that became the fourth human-made object in space and the oldest still in orbit, used primarily for geophysical and atmospheric research.
-
C.
Pioneer 10
Pioneer 10 is a NASA space probe launched in 1972 that became the first spacecraft to travel through the asteroid belt and make a direct observation of Jupiter before heading into interstellar space.
-
D.
Pioneer 11
Pioneer 11 is a NASA space probe launched in 1973 that conducted pioneering flybys of Jupiter and Saturn, helping to open the outer solar system to exploration.
-
E.
Apollo 11
Apollo 11 was the historic 1969 spaceflight that first landed humans on the Moon and safely returned them to Earth.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Soviet spacecraft
ⓘ
lunar impactor ⓘ space probe ⓘ uncrewed spacecraft ⓘ |
| achievement |
first human-made object to reach the Moon
ⓘ
first spacecraft to impact the Moon ⓘ |
| carriedInstrument |
Cherenkov detector
ⓘ
geiger counter ⓘ ion trap ⓘ magnetometer ⓘ micrometeorite detector ⓘ scintillation counter ⓘ |
| carriedPayload |
Soviet pennants
ⓘ
sodium gas experiment ⓘ spherical pennant containers ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| followedBy | Luna 3 ⓘ |
| historicalPeriod | early Space Age ⓘ |
| impactBody | Moon ⓘ |
| impactDate | 1959-09-14 ⓘ |
| impactRegion |
Mare Imbrium vicinity
ⓘ
Palus Putredinis vicinity ⓘ |
| languageOfInscription | Russian ⓘ |
| launchDate | 1959-09-12 ⓘ |
| launchSite |
Baikonur Cosmodrome
ⓘ
Baikonur Cosmodrome Site 1/5 ⓘ
linked to:
Baikonur Cosmodrome
|
| launchVehicle |
Vostok-L 8K72
ⓘ
linked to:
Vostok-K rocket
|
| manufacturer | OKB-1 ⓘ |
| mass | 390 kg ⓘ |
| missionType |
lunar impact
ⓘ
scientific ⓘ |
| notableResult |
confirmed absence of significant lunar radiation belts
ⓘ
found no detectable lunar magnetic field ⓘ |
| objective |
measure solar wind
ⓘ
search for lunar magnetic field ⓘ search for lunar radiation belts ⓘ study interplanetary space ⓘ |
| operator | Soviet space program ⓘ |
| orbitType | direct impact trajectory ⓘ |
| powerSource | batteries ⓘ |
| precededBy | Luna 1 ⓘ |
| program |
Luna program
ⓘ
linked to:
Luna programme
|
| shape | spherical ⓘ |
| spaceAgency | Soviet Academy of Sciences ⓘ |
| spacecraftBus |
Luna E-1A
ⓘ
linked to:
Luna 2
|
| status |
mission completed
ⓘ
spacecraft destroyed on lunar impact ⓘ |
| target |
Moon
ⓘ
linked to:
Luna
|
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 2 Description of subject: Luna 2 was a Soviet space probe that became the first human-made object to reach the Moon, marking a major milestone in early space exploration.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.