Sputnik 1
E89412
Sputnik 1 was the first artificial Earth satellite, launched by the Soviet Union in 1957 and marking the beginning of the space age.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Sputnik 1 canonical | 16 |
| Sputnik | 1 |
| Sputnik 1 (via derivative launch vehicle) | 1 |
| launch of Sputnik 1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T743023 — 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: Sputnik 1 Context triple: [Vanguard 1, precededBy, Sputnik 1]
-
A.
Vostok 1
Vostok 1 was the Soviet spacecraft that carried Yuri Gagarin on the first human spaceflight, marking humanity’s inaugural journey into outer space in 1961.
-
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.
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.
-
D.
Voskhod spacecraft
The Voskhod spacecraft was a Soviet crewed space capsule that succeeded Vostok and enabled milestones such as the first multi-person crewed mission and the first spacewalk during the early space race.
-
E.
Luna 2
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.
- 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: Sputnik 1 Target entity description: Sputnik 1 was the first artificial Earth satellite, launched by the Soviet Union in 1957 and marking the beginning of the space age.
-
A.
Vostok 1
Vostok 1 was the Soviet spacecraft that carried Yuri Gagarin on the first human spaceflight, marking humanity’s inaugural journey into outer space in 1961.
-
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.
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.
-
D.
Voskhod spacecraft
The Voskhod spacecraft was a Soviet crewed space capsule that succeeded Vostok and enabled milestones such as the first multi-person crewed mission and the first spacewalk during the early space race.
-
E.
Luna 2
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.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Soviet spacecraft
ⓘ
artificial satellite ⓘ spacecraft ⓘ |
| apogeeAltitude_km | about 939 ⓘ |
| communicationMethod | omnidirectional radio transmission ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| decayDate | 1958-01-04 ⓘ |
| designBureau | OKB-1 ⓘ |
| designer | Sergei Korolev ⓘ |
| diameter_m | about 0.58 ⓘ |
| followedBy | Sputnik 2 ⓘ |
| historicalSignificance |
influenced creation of NASA
ⓘ
marked beginning of the space age ⓘ triggered the space race ⓘ |
| launchDate | 1957-10-04 ⓘ |
| launchedBy | Soviet Union ⓘ |
| launchLocationCountry | Kazakh SSR ⓘ |
| launchLocationCurrentCountry | Kazakhstan ⓘ |
| launchSite | Baikonur Cosmodrome ⓘ |
| launchVehicle |
R-7 Semyorka rocket
ⓘ
surface form:
R-7 Semyorka
R-7 Semyorka rocket ⓘ
surface form:
Sputnik rocket
|
| launchYear | 1957 ⓘ |
| mass_kg | about 83.6 ⓘ |
| missionType |
scientific research
ⓘ
technology demonstration ⓘ |
| numberOfAntennas | 4 ⓘ |
| numberOfOrbitsCompleted | about 1440 ⓘ |
| operator | Soviet Union ⓘ |
| orbitalPeriod_minutes | about 96 ⓘ |
| orbitalRegime | low Earth orbit ⓘ |
| orbitalStatus | decayed ⓘ |
| payload |
pressure sensors
ⓘ
radio transmitter ⓘ temperature sensors ⓘ |
| perigeeAltitude_km | about 215 ⓘ |
| powerSource | battery ⓘ |
| precededBy | none (first artificial satellite) ⓘ |
| primaryPurpose |
demonstrate feasibility of artificial satellite
ⓘ
study ionosphere ⓘ study upper atmosphere ⓘ |
| program |
Soviet space program
ⓘ
surface form:
Sputnik program
|
| radioFrequency_MHz |
20.005
ⓘ
40.002 ⓘ |
| shape | sphere ⓘ |
| signalDuration_weeks | about 3 ⓘ |
| signalType | radio beeps ⓘ |
| spaceAgeSignificance | first artificial Earth satellite ⓘ |
| timeInOrbit_days | about 92 ⓘ |
| trackedBy |
ground-based radar
ⓘ
optical observations ⓘ |
| visibleTo | naked eye ⓘ |
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: Sputnik 1 Description of subject: Sputnik 1 was the first artificial Earth satellite, launched by the Soviet Union in 1957 and marking the beginning of the space age.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Vanguard 1
this entity surface form:
launch of Sputnik 1
subject surface form:
OKB-1
subject surface form:
R-7 Semyorka
subject surface form:
R-7 Semyorka
this entity surface form:
Sputnik
this entity surface form:
Sputnik 1 (via derivative launch vehicle)
subject surface form:
Semyorka