Polar Satellite Launch Vehicle
E46132
The Polar Satellite Launch Vehicle (PSLV) is India’s highly reliable, medium-lift launch vehicle used by ISRO to place satellites into polar, Sun-synchronous, and other orbits, and is known for launching multiple satellites in a single mission.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T364092 — 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: Polar Satellite Launch Vehicle Context triple: [Indian Space Research Organisation, developedLaunchVehicle, Polar Satellite Launch Vehicle]
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A.
Vostok-K rocket
The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
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B.
Falcon 1 rocket
Falcon 1 rocket is a small, privately developed orbital launch vehicle created by SpaceX that became the first privately built liquid-fueled rocket to reach orbit.
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C.
Falcon 9 rocket
The Falcon 9 rocket is a partially reusable, two-stage orbital launch vehicle developed by SpaceX that has revolutionized commercial spaceflight through frequent, cost-effective missions and routine booster landings.
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D.
Atlas-Centaur
Atlas-Centaur was an American expendable launch vehicle family that combined an Atlas booster with a high-energy Centaur upper stage to send payloads, including early interplanetary probes, into space.
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E.
Virgin Orbit
Virgin Orbit was a satellite launch company within Richard Branson’s Virgin Group that specialized in air-launched orbital rockets deployed from a modified Boeing 747.
- 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: Polar Satellite Launch Vehicle Target entity description: The Polar Satellite Launch Vehicle (PSLV) is India’s highly reliable, medium-lift launch vehicle used by ISRO to place satellites into polar, Sun-synchronous, and other orbits, and is known for launching multiple satellites in a single mission.
-
A.
Vostok-K rocket
The Vostok-K rocket was a Soviet launch vehicle that carried Yuri Gagarin on the first human spaceflight in history.
-
B.
Falcon 1 rocket
Falcon 1 rocket is a small, privately developed orbital launch vehicle created by SpaceX that became the first privately built liquid-fueled rocket to reach orbit.
-
C.
Falcon 9 rocket
The Falcon 9 rocket is a partially reusable, two-stage orbital launch vehicle developed by SpaceX that has revolutionized commercial spaceflight through frequent, cost-effective missions and routine booster landings.
-
D.
Atlas-Centaur
Atlas-Centaur was an American expendable launch vehicle family that combined an Atlas booster with a high-energy Centaur upper stage to send payloads, including early interplanetary probes, into space.
-
E.
Virgin Orbit
Virgin Orbit was a satellite launch company within Richard Branson’s Virgin Group that specialized in air-launched orbital rockets deployed from a modified Boeing 747.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch vehicle
ⓘ
medium-lift launch vehicle ⓘ orbital launch vehicle ⓘ |
| abbreviation |
PSLV launch vehicle family
ⓘ
surface form:
PSLV
|
| capability | launching multiple satellites in a single mission ⓘ |
| countryOfOrigin | India ⓘ |
| designer | Indian Space Research Organisation ⓘ |
| developer | Vikram Sarabhai Space Centre ⓘ |
| family | PSLV launch vehicle family ⓘ |
| firstFlight | 1993-09-20 ⓘ |
| firstFlightLaunchSite | Satish Dhawan Space Centre ⓘ |
| firstFlightMission | PSLV-D1 ⓘ |
| launchConfiguration | four-stage launch vehicle ⓘ |
| launchedMission |
Cartosat series satellites
ⓘ
Chandrayaan-1 ⓘ IRNSS satellites ⓘ Mars Orbiter Mission ⓘ NavIC satellites ⓘ RISAT series satellites ⓘ |
| launchMarket |
Indian government payloads
ⓘ
international commercial customers ⓘ |
| launchPad |
First Launch Pad
ⓘ
Second Launch Pad, Satish Dhawan Space Centre ⓘ
surface form:
Second Launch Pad
|
| launchSite | Satish Dhawan Space Centre ⓘ |
| manufacturer | Indian Space Research Organisation ⓘ |
| notableFeature |
high reliability record among Indian launch vehicles
ⓘ
used for commercial satellite launches ⓘ used to launch interplanetary missions ⓘ |
| notableRecord | launched over 100 satellites in a single mission (PSLV-C37) ⓘ |
| operator | Indian Space Research Organisation ⓘ |
| orbitTypesSupported |
Sun-synchronous orbit
ⓘ
low Earth orbit ⓘ polar orbit ⓘ sub-Geosynchronous Transfer Orbit ⓘ |
| primaryUse |
placing satellites into Sun-synchronous orbit
ⓘ
placing satellites into polar orbit ⓘ |
| propellantStage1 | HTPB-based solid propellant ⓘ |
| propellantStage2 | UH25 and nitrogen tetroxide ⓘ |
| propellantStage3 | HTPB-based solid propellant ⓘ |
| propellantStage4 | MMH and MON-3 ⓘ |
| stage1Type | solid rocket motor ⓘ |
| stage2Type | liquid rocket engine ⓘ |
| stage3Type | solid rocket motor ⓘ |
| stage4Type | liquid rocket engine ⓘ |
| status | operational ⓘ |
| usedByAgency |
Indian Space Research Organisation
ⓘ
surface form:
ISRO
|
| variant |
Core Alone configuration
ⓘ
DL variant ⓘ PSLV-CA ⓘ PSLV-G ⓘ PSLV-XL ⓘ QL variant ⓘ |
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: Polar Satellite Launch Vehicle Description of subject: The Polar Satellite Launch Vehicle (PSLV) is India’s highly reliable, medium-lift launch vehicle used by ISRO to place satellites into polar, Sun-synchronous, and other orbits, and is known for launching multiple satellites in a single mission.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Launch Control Centre (Satish Dhawan Space Centre)
subject surface form:
PSLV Launch Complex
this entity surface form:
Polar Satellite Launch Vehicle – Core Alone
this entity surface form:
Polar Satellite Launch Vehicle programme
this entity surface form:
Polar Satellite Launch Vehicle program
this entity surface form:
Polar Satellite Launch Vehicle family
this entity surface form:
Polar Satellite Launch Vehicle – Generic