Pioneer 1
E304351
Pioneer 1 was an early U.S. lunar probe launched in 1958 as part of NASA’s first series of deep-space exploration missions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pioneer 1 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2816475 — 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: Pioneer 1 Context triple: [Pioneer program, includes, Pioneer 1]
-
A.
Pioneer 0
Pioneer 0 was an early U.S. lunar probe attempt in 1958 that aimed to reach the Moon but failed to achieve orbit due to a launch vehicle malfunction.
-
B.
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.
-
C.
Explorer 1
Explorer 1 was the first successful United States satellite, launched in 1958 and notable for discovering the Van Allen radiation belts.
-
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.
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.
- 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: Pioneer 1 Target entity description: Pioneer 1 was an early U.S. lunar probe launched in 1958 as part of NASA’s first series of deep-space exploration missions.
-
A.
Pioneer 0
Pioneer 0 was an early U.S. lunar probe attempt in 1958 that aimed to reach the Moon but failed to achieve orbit due to a launch vehicle malfunction.
-
B.
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.
-
C.
Explorer 1
Explorer 1 was the first successful United States satellite, launched in 1958 and notable for discovering the Van Allen radiation belts.
-
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.
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.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
artificial satellite
ⓘ
lunar probe ⓘ space probe ⓘ |
| achieved |
data on Van Allen radiation belts
ⓘ
measurements of interplanetary space near Earth ⓘ |
| apoapsis | 128,000 km (Earth) ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| inclination | 28.9 degrees ⓘ |
| intendedDestination | Moon ⓘ |
| launchComplex | LC-17A ⓘ |
| launchDate | 1958-10-11 ⓘ |
| launchFailureMode | incorrect upper-stage guidance ⓘ |
| launchSite |
Cape Canaveral Space Force Station
ⓘ
surface form:
Cape Canaveral Air Force Station
|
| launchVehicle | Thor-Able ⓘ |
| manufacturer | Space Technology Laboratories ⓘ |
| mass | 38.0 kg ⓘ |
| missionObjective |
study space environment between Earth and Moon
ⓘ
study the Moon ⓘ test deep-space tracking techniques ⓘ |
| missionOutcome | partial failure ⓘ |
| missionType | lunar flyby ⓘ |
| nextMission | Pioneer 2 ⓘ |
| notableFor | first spacecraft launched by NASA after its creation ⓘ |
| operator | NASA ⓘ |
| orbitalPeriod | 43.5 hours ⓘ |
| partOf | Pioneer program ⓘ |
| periapsis | 113 km (Earth) ⓘ |
| powerSource | batteries ⓘ |
| previousMission | Pioneer 0 ⓘ |
| program | Pioneer ⓘ |
| programPhase | early U.S. deep-space exploration ⓘ |
| reentryBody | Earth ⓘ |
| reentryCause | insufficient velocity for lunar transfer ⓘ |
| reentryDate | 1958-10-13 ⓘ |
| scientificInstrument |
Geiger–Müller tube
ⓘ
surface form:
Geiger-Müller tube
infrared radiometer ⓘ ionization chamber ⓘ micrometeorite detector ⓘ telemetry system ⓘ |
| shape | cone ⓘ |
| spaceAgency |
NASA
ⓘ
surface form:
National Aeronautics and Space Administration
|
| spacecraftBus | Pioneer early lunar probe bus ⓘ |
| status | decayed from orbit ⓘ |
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: Pioneer 1 Description of subject: Pioneer 1 was an early U.S. lunar probe launched in 1958 as part of NASA’s first series of deep-space exploration missions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.