Epsilon launch vehicle

E91211

expendable launch system small-lift launch vehicle solid-fuel rocket

The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.

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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 launch vehicle ⓘ surface form: Epsilon rocket
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 launch vehicle self-linksurface differs ⓘ surface form: Epsilon rocket family
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	Japan Aerospace Exploration Agency ⓘ surface form: JAXA
operator	Japan Aerospace Exploration Agency ⓘ surface form: JAXA
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

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Japan Aerospace Exploration Agency → developerOf → Epsilon launch vehicle ⓘ

Epsilon launch vehicle → alsoKnownAs → Epsilon launch vehicle ⓘ

this entity surface form: Epsilon rocket

Epsilon launch vehicle → family → Epsilon launch vehicle self-linksurface differs ⓘ

this entity surface form: Epsilon rocket family

Uchinoura Space Center → launchesFromHere → Epsilon launch vehicle ⓘ