PSLV-C1
E908204
PSLV-C1 was an early operational flight of India’s Polar Satellite Launch Vehicle that successfully placed the IRS-1D remote sensing satellite into orbit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PSLV-C1 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T11146213 — 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: PSLV-C1 Context triple: [IRS-1D, launchVehicle, PSLV-C1]
-
A.
PSLV-C11
PSLV-C11 is an upgraded variant of India’s Polar Satellite Launch Vehicle that successfully launched the country’s first lunar mission, Chandrayaan-1.
-
B.
PSLV-C2
PSLV-C2 is an Indian Polar Satellite Launch Vehicle mission that successfully deployed multiple satellites into orbit, including Oceansat-1, marking an early milestone in ISRO’s commercial and remote-sensing launch capabilities.
-
C.
PSLV-C14
PSLV-C14 is a specific mission of India's Polar Satellite Launch Vehicle series, used by ISRO to deploy the Oceansat-2 Earth observation satellite into orbit.
-
D.
PSLV-D1
PSLV-D1 was the inaugural developmental mission of India’s Polar Satellite Launch Vehicle (PSLV), marking the rocket’s first test flight.
-
E.
PSLV-C20
PSLV-C20 is an Indian Polar Satellite Launch Vehicle mission that successfully launched multiple satellites, including the Canadian NEOSSat space telescope, 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: PSLV-C1 Target entity description: PSLV-C1 was an early operational flight of India’s Polar Satellite Launch Vehicle that successfully placed the IRS-1D remote sensing satellite into orbit.
-
A.
PSLV-C11
PSLV-C11 is an upgraded variant of India’s Polar Satellite Launch Vehicle that successfully launched the country’s first lunar mission, Chandrayaan-1.
-
B.
PSLV-C2
PSLV-C2 is an Indian Polar Satellite Launch Vehicle mission that successfully deployed multiple satellites into orbit, including Oceansat-1, marking an early milestone in ISRO’s commercial and remote-sensing launch capabilities.
-
C.
PSLV-C14
PSLV-C14 is a specific mission of India's Polar Satellite Launch Vehicle series, used by ISRO to deploy the Oceansat-2 Earth observation satellite into orbit.
-
D.
PSLV-D1
PSLV-D1 was the inaugural developmental mission of India’s Polar Satellite Launch Vehicle (PSLV), marking the rocket’s first test flight.
-
E.
PSLV-C20
PSLV-C20 is an Indian Polar Satellite Launch Vehicle mission that successfully launched multiple satellites, including the Canadian NEOSSat space telescope, into orbit.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Indian space mission
ⓘ
PSLV launch ⓘ orbital launch ⓘ space launch ⓘ |
| belongsTo | Indian civilian space programme ⓘ |
| countryOfOrigin | India ⓘ |
| firstStagePropellant | solid ⓘ |
| followedBy | PSLV-C2 NERFINISHED ⓘ |
| fourthStagePropellant | liquid ⓘ |
| launchCountry | India NERFINISHED ⓘ |
| launchDate | 1997-09-29 ⓘ |
| launchLocationCountry | India NERFINISHED ⓘ |
| launchLocationRegion | Andhra Pradesh NERFINISHED ⓘ |
| launchMassClass | medium-lift launch ⓘ |
| launchOutcome | success ⓘ |
| launchPad | First Launch Pad ⓘ |
| launchServiceProvider | Indian Space Research Organisation NERFINISHED ⓘ |
| launchSite |
Satish Dhawan Space Centre
NERFINISHED
ⓘ
Sriharikota NERFINISHED ⓘ |
| launchVehicle |
PSLV
NERFINISHED
ⓘ
Polar Satellite Launch Vehicle NERFINISHED ⓘ |
| launchVehicleVariant | PSLV core-alone configuration ⓘ |
| launchYear | 1997 ⓘ |
| missionDomain | remote sensing ⓘ |
| missionStatus | completed ⓘ |
| missionType | Earth observation satellite launch ⓘ |
| notableAs | early operational flight of PSLV ⓘ |
| operator |
Indian Space Research Organisation
ⓘ
surface form:
ISRO
Indian Space Research Organisation ⓘ |
| orbitType |
Sun-synchronous orbit
ⓘ
polar orbit ⓘ |
| payload | IRS-1D NERFINISHED ⓘ |
| payloadMissionType | Earth resources observation ⓘ |
| payloadOperator | Indian Space Research Organisation NERFINISHED ⓘ |
| payloadType | remote sensing satellite ⓘ |
| precededBy | PSLV-D3 NERFINISHED ⓘ |
| primaryObjective | to place IRS-1D into Sun-synchronous orbit ⓘ |
| program | PSLV programme NERFINISHED ⓘ |
| secondStagePropellant | liquid ⓘ |
| spaceAgency | Indian Space Research Organisation NERFINISHED ⓘ |
| spacecraftOnboard | IRS-1D NERFINISHED ⓘ |
| stageCount | 4 ⓘ |
| successCriteria | injection of IRS-1D into planned orbit ⓘ |
| thirdStagePropellant | solid ⓘ |
| vehicleFamily | PSLV family NERFINISHED ⓘ |
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: PSLV-C1 Description of subject: PSLV-C1 was an early operational flight of India’s Polar Satellite Launch Vehicle that successfully placed the IRS-1D remote sensing satellite into orbit.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.