Long March 2E
E729133
Long March 2E is a Chinese expendable orbital launch vehicle developed by the China Academy of Launch Vehicle Technology and used primarily in the 1990s to place communications satellites into geostationary transfer orbit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Long March 2E canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7922833 — 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: Long March 2E Context triple: [Xichang Satellite Launch Center, launchVehicleUsed, Long March 2E]
-
A.
Long March 2C
Long March 2C is a Chinese two-stage orbital launch vehicle used primarily to place satellites into low Earth orbit.
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B.
Long March 2D
Long March 2D is a Chinese two-stage orbital launch vehicle primarily used to place satellites into low Earth and sun-synchronous orbits.
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C.
Long March 4B
Long March 4B is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
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D.
Long March 4A
Long March 4A is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
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E.
Long March 7
Long March 7 is a Chinese medium-lift launch vehicle designed primarily to deliver cargo spacecraft and components for China’s crewed space program into orbit.
- 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: Long March 2E Target entity description: Long March 2E is a Chinese expendable orbital launch vehicle developed by the China Academy of Launch Vehicle Technology and used primarily in the 1990s to place communications satellites into geostationary transfer orbit.
-
A.
Long March 2C
Long March 2C is a Chinese two-stage orbital launch vehicle used primarily to place satellites into low Earth orbit.
-
B.
Long March 2D
Long March 2D is a Chinese two-stage orbital launch vehicle primarily used to place satellites into low Earth and sun-synchronous orbits.
-
C.
Long March 4B
Long March 4B is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
-
D.
Long March 4A
Long March 4A is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
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E.
Long March 7
Long March 7 is a Chinese medium-lift launch vehicle designed primarily to deliver cargo spacecraft and components for China’s crewed space program into orbit.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
expendable orbital launch vehicle
ⓘ
launch vehicle ⓘ |
| configuration | two core stages plus four strap-on boosters and an upper stage ⓘ |
| countryOfOrigin | China ⓘ |
| developer | China Academy of Launch Vehicle Technology NERFINISHED ⓘ |
| diameter | 3.35 m (core stage) ⓘ |
| failedLaunches | 2 ⓘ |
| failureCause | fairing structural failure on some missions ⓘ |
| familyVariantOf | Long March 2C NERFINISHED ⓘ |
| firstFlightDate | 1990-07-16 ⓘ |
| firstFlightPayload | AsiaSat 1 NERFINISHED ⓘ |
| firstStageOxidizer | dinitrogen tetroxide ⓘ |
| firstStagePropellant | unsymmetrical dimethylhydrazine ⓘ |
| hasBooster | strap-on liquid rocket boosters ⓘ |
| height | ~49.7 m ⓘ |
| introduced | early 1990s ⓘ |
| lastFlightDate | 1995-12-28 ⓘ |
| launchAzimuth | optimized for GTO missions from Xichang ⓘ |
| launchEnvironment | commercial satellite launch market ⓘ |
| launchMass | ~460,000 kg ⓘ |
| launchPeriod | 1990s ⓘ |
| launchSite |
Launch Area 2, Xichang Satellite Launch Center
NERFINISHED
ⓘ
Launch Complex 2, Xichang Satellite Launch Center NERFINISHED ⓘ Xichang Satellite Launch Center NERFINISHED ⓘ |
| manufacturer | China Academy of Launch Vehicle Technology NERFINISHED ⓘ |
| marketRole | Chinese heavy-lift GTO launcher of the early 1990s ⓘ |
| notableFailure |
Apstar 2 launch failure
ⓘ
Optus B2 launch failure ⓘ |
| numberOfStages | 3 ⓘ |
| operator |
China Great Wall Industry Corporation
NERFINISHED
ⓘ
China National Space Administration NERFINISHED ⓘ |
| partOfFamily |
Long March 2
NERFINISHED
ⓘ
Long March rocket family NERFINISHED ⓘ |
| payloadToGTO | approximately 3,500 kg ⓘ |
| primaryOrbit | geostationary transfer orbit ⓘ |
| primaryUse | launching communications satellites ⓘ |
| propellantType | hypergolic propellants ⓘ |
| retiredFromService | mid-1990s ⓘ |
| secondStageOxidizer | dinitrogen tetroxide ⓘ |
| secondStagePropellant | unsymmetrical dimethylhydrazine ⓘ |
| status | retired ⓘ |
| successfulLaunches | 5 ⓘ |
| successor | Long March 3B NERFINISHED ⓘ |
| totalLaunches | 7 ⓘ |
| upperStageType | solid-propellant upper stage ⓘ |
| usedFor |
international commercial satellite launches
ⓘ
launching foreign-built communications satellites ⓘ |
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: Long March 2E Description of subject: Long March 2E is a Chinese expendable orbital launch vehicle developed by the China Academy of Launch Vehicle Technology and used primarily in the 1990s to place communications satellites into geostationary transfer orbit.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.