S-IVB
E130633
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
All labels observed (9)
| Label | Occurrences |
|---|---|
| S-IVB canonical | 5 |
| Saturn V S-IVB stage | 3 |
| S-IVB second stage | 1 |
| S-IVB stage | 1 |
| Saturn IB S-IVB stage | 1 |
| Saturn V S-IVB stage in translunar trajectory | 1 |
| Saturn V S-IVB third stage | 1 |
| Saturn V S‑IVB stage | 1 |
| Saturn V third stage (S-IVB) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1116661 — 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: S-IVB Context triple: [Saturn V, thirdStage, S-IVB]
-
A.
SLIM lunar lander
The SLIM lunar lander is a Japanese spacecraft designed by JAXA to demonstrate high-precision, lightweight landing technology on the Moon’s surface.
-
B.
Apollo Lunar Module
The Apollo Lunar Module was the two-stage spacecraft used by NASA during the Apollo missions to land astronauts on the Moon and return them to lunar orbit.
-
C.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
D.
Orion spacecraft
The Orion spacecraft is NASA’s next-generation crewed space vehicle designed to carry astronauts beyond low Earth orbit on deep-space missions, including journeys to the Moon and eventually Mars.
-
E.
ATV spacecraft
The ATV spacecraft was an automated European cargo vehicle designed to resupply and reboost the International Space Station.
- 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: S-IVB Target entity description: The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
-
A.
SLIM lunar lander
The SLIM lunar lander is a Japanese spacecraft designed by JAXA to demonstrate high-precision, lightweight landing technology on the Moon’s surface.
-
B.
Apollo Lunar Module
The Apollo Lunar Module was the two-stage spacecraft used by NASA during the Apollo missions to land astronauts on the Moon and return them to lunar orbit.
-
C.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
D.
Orion spacecraft
The Orion spacecraft is NASA’s next-generation crewed space vehicle designed to carry astronauts beyond low Earth orbit on deep-space missions, including journeys to the Moon and eventually Mars.
-
E.
ATV spacecraft
The ATV spacecraft was an automated European cargo vehicle designed to resupply and reboost the International Space Station.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
rocket stage
ⓘ
upper stage ⓘ |
| burnCapability | restartable in orbit ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| developedFor |
Saturn I Block II
ⓘ
linked to:
Saturn I
|
| diameter |
21.7 ft
ⓘ
6.6 m ⓘ |
| era |
1960s
ⓘ
1970s ⓘ |
| expendedAs |
heliocentric orbit stage in some missions
ⓘ
impactor on the Moon in some missions ⓘ |
| firstFlight | 1964 ⓘ |
| fuelTankConfiguration | common bulkhead between fuel and oxidizer tanks ⓘ |
| guidanceSystem | instrument unit mounted above stage ⓘ |
| launchVehicleFamily |
Saturn family of launch vehicles
ⓘ
linked to:
Saturn rocket family
|
| length |
17.8 m
ⓘ
58.6 ft ⓘ |
| manufacturer | Douglas Aircraft Company ⓘ |
| notableMission |
Apollo 11
ⓘ
Apollo 13 ⓘ Apollo 8 ⓘ |
| numberOfEngines | 1 ⓘ |
| operator | NASA ⓘ |
| oxidizer | liquid oxygen ⓘ |
| partOf |
Saturn I
ⓘ
Saturn IB ⓘ Saturn V ⓘ |
| propellantType | liquid hydrogen ⓘ |
| propulsionType | liquid-fueled rocket engine ⓘ |
| rocketEngine | J-2 ⓘ |
| stageNumberOnSaturnIB | second stage ⓘ |
| stageNumberOnSaturnV | third stage ⓘ |
| status | retired ⓘ |
| successorTo |
S-IV stage
ⓘ
linked to:
S-IV
|
| thrustVacuum |
about 1,033 kN
ⓘ
about 232,000 lbf ⓘ |
| usedFor |
placing Apollo spacecraft into Earth orbit
ⓘ
translunar injection ⓘ |
| usedForMissionPhase |
parking Earth orbit insertion
ⓘ
translunar injection burn ⓘ |
| usedInProgram | Apollo program ⓘ |
| usedOnVehicle |
Saturn IB
ⓘ
Saturn V ⓘ |
| usedWithSpacecraft |
Apollo Command and Service Module
ⓘ
linked to:
Apollo command and service module
Apollo Lunar Module ⓘ |
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: S-IVB Description of subject: The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB
linked to: S-IVB