Epsilon launch vehicle
E91211
The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Epsilon rocket | 2 |
| Epsilon launch vehicle canonical | 1 |
| Epsilon rocket family | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T727709 — 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: Epsilon launch vehicle Context triple: [Japan Aerospace Exploration Agency, developerOf, Epsilon launch vehicle]
-
A.
Proton rocket
The Proton rocket is a heavy-lift Russian expendable launch vehicle widely used to place large payloads, including space station modules and communications satellites, into orbit.
-
B.
H3 launch vehicle
The H3 launch vehicle is Japan’s next-generation, expendable rocket designed to provide more flexible, cost-effective access to space for a wide range of satellite and mission payloads.
-
C.
H-IIA launch vehicle
The H-IIA launch vehicle is a Japanese expendable rocket system used primarily for satellite deployment and space exploration missions.
-
D.
R-1 rocket
The R-1 rocket was an early Soviet ballistic missile and research rocket developed after World War II as a near-copy of Germany’s V-2, serving as a foundation for later Soviet rocketry.
-
E.
Vostok-K rocket
The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
- 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: Epsilon launch vehicle Target entity description: The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
-
A.
Proton rocket
The Proton rocket is a heavy-lift Russian expendable launch vehicle widely used to place large payloads, including space station modules and communications satellites, into orbit.
-
B.
H3 launch vehicle
The H3 launch vehicle is Japan’s next-generation, expendable rocket designed to provide more flexible, cost-effective access to space for a wide range of satellite and mission payloads.
-
C.
H-IIA launch vehicle
The H-IIA launch vehicle is a Japanese expendable rocket system used primarily for satellite deployment and space exploration missions.
-
D.
R-1 rocket
The R-1 rocket was an early Soviet ballistic missile and research rocket developed after World War II as a near-copy of Germany’s V-2, serving as a foundation for later Soviet rocketry.
-
E.
Vostok-K rocket
The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch system
ⓘ
small-lift launch vehicle ⓘ solid-fuel rocket ⓘ |
| alsoKnownAs |
Epsilon rocket
ⓘ
linked to:
Epsilon launch vehicle
|
| countryOfOrigin | Japan ⓘ |
| designFeature |
high degree of automation
ⓘ
reduced ground support equipment ⓘ shortened countdown operations ⓘ |
| designGoal |
cost-effective small satellite launches
ⓘ
reduced launch preparation time ⓘ simplified operations ⓘ |
| developer | Japan Aerospace Exploration Agency ⓘ |
| family |
Epsilon rocket family
ⓘ
linked to:
Epsilon launch vehicle
|
| firstStageType | solid rocket motor ⓘ |
| guidanceSystem |
advanced avionics
ⓘ
autonomous onboard guidance ⓘ |
| launchAzimuth |
low Earth orbit missions
ⓘ
sun-synchronous orbit missions ⓘ |
| launchConfiguration | road-transportable segments ⓘ |
| launchCostGoal | lower cost per kilogram to orbit compared to M-V ⓘ |
| launchEnvironment |
near-polar orbits
ⓘ
sun-synchronous orbits ⓘ |
| launchServiceMarket | small satellite launch market ⓘ |
| launchSite |
Mu Center
ⓘ
Uchinoura Space Center ⓘ |
| manufacturer |
JAXA
ⓘ
linked to:
Japan Aerospace Exploration Agency
|
| operator |
JAXA
ⓘ
linked to:
Japan Aerospace Exploration Agency
|
| optionalStage | fourth stage ⓘ |
| primaryUse |
launching scientific satellites
ⓘ
launching small Earth observation satellites ⓘ launching technology demonstration satellites ⓘ |
| propellantType | solid propellant ⓘ |
| secondStageType | solid rocket motor ⓘ |
| stageCount | three-stage configuration ⓘ |
| status | operational ⓘ |
| successorTo | M-V launch vehicle ⓘ |
| targetPayloadClass | small satellites ⓘ |
| technologyHeritage |
H-IIA avionics technology
ⓘ
M-V solid rocket technology ⓘ |
| thirdStageType | solid rocket motor ⓘ |
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: Epsilon launch vehicle Description of subject: The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Epsilon launch vehicle
linked to: Epsilon launch vehicle
linked to: Epsilon launch vehicle