PSLV
E908293
PSLV (Polar Satellite Launch Vehicle) is India’s highly reliable medium-lift launch vehicle developed by ISRO, widely used to deploy satellites into polar and other Earth orbits and to support interplanetary missions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| PSLV canonical | 40 |
| PSLV launch system | 1 |
| PSLV launch vehicle | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11001498 — 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 Context triple: [Indian Lunar Exploration Programme, launchVehicleUsed, PSLV]
-
A.
PSLV-CA
PSLV-CA is a variant of India’s Polar Satellite Launch Vehicle designed for launching smaller payloads into orbit using a configuration without solid strap-on boosters.
-
B.
PSLV-G
PSLV-G is a standard configuration of India’s Polar Satellite Launch Vehicle used by ISRO to place satellites into polar and sun-synchronous orbits.
-
C.
PSLV-DL
PSLV-DL is a two-strap-on variant of India’s Polar Satellite Launch Vehicle designed to flexibly launch small to medium payloads into Earth orbit.
-
D.
PSLV-XL
PSLV-XL is a high-powered variant of India’s Polar Satellite Launch Vehicle designed to carry heavier payloads into orbit, notably used for missions like the Chandrayaan-1 lunar probe.
-
E.
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.
- 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 Target entity description: PSLV (Polar Satellite Launch Vehicle) is India’s highly reliable medium-lift launch vehicle developed by ISRO, widely used to deploy satellites into polar and other Earth orbits and to support interplanetary missions.
-
A.
PSLV-CA
PSLV-CA is a variant of India’s Polar Satellite Launch Vehicle designed for launching smaller payloads into orbit using a configuration without solid strap-on boosters.
-
B.
PSLV-G
PSLV-G is a standard configuration of India’s Polar Satellite Launch Vehicle used by ISRO to place satellites into polar and sun-synchronous orbits.
-
C.
PSLV-DL
PSLV-DL is a two-strap-on variant of India’s Polar Satellite Launch Vehicle designed to flexibly launch small to medium payloads into Earth orbit.
-
D.
PSLV-XL
PSLV-XL is a high-powered variant of India’s Polar Satellite Launch Vehicle designed to carry heavier payloads into orbit, notably used for missions like the Chandrayaan-1 lunar probe.
-
E.
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.
- F. None of above. chosen
Statements (68)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch system
ⓘ
launch vehicle ⓘ medium-lift launch vehicle ⓘ |
| commercialUse | used to launch foreign satellites ⓘ |
| configurationVariant |
Core Alone configuration
ⓘ
DL configuration ⓘ PSLV-CA ⓘ PSLV-G ⓘ PSLV-XL ⓘ QL configuration ⓘ |
| country | India ⓘ |
| countryOfOrigin | India ⓘ |
| customerBase | multiple international space agencies and companies ⓘ |
| designGoal | to place remote sensing satellites into sun-synchronous polar orbits ⓘ |
| developer | Indian Space Research Organisation ⓘ |
| diameter | about 2.8 m ⓘ |
| fairingType | payload fairing for multiple satellite configurations ⓘ |
| family | PSLV family ⓘ |
| firstFlightDate | 1993-09-20 ⓘ |
| firstStageEngine |
S139 solid rocket motor
ⓘ
linked to:
PSOM-XL solid rocket booster
|
| firstSuccessfulFlightDate | 1994-10-15 ⓘ |
| followedBy |
GSLV
ⓘ
linked to:
Geosynchronous Satellite Launch Vehicle
|
| fourthStageEngine | PS-4 engine ⓘ |
| fullName | Polar Satellite Launch Vehicle ⓘ |
| guidanceSystem | inertial navigation system with onboard computer ⓘ |
| height | about 44 m ⓘ |
| launchFrequency | regularly used for commercial and domestic launches ⓘ |
| launchMass | about 320000 kg ⓘ |
| launchSite | Satish Dhawan Space Centre ⓘ |
| manufacturer | Indian Space Research Organisation ⓘ |
| missionTypeSupported |
Earth observation missions
ⓘ
communication satellite missions ⓘ interplanetary missions ⓘ navigation satellite missions ⓘ |
| notableFeature |
high reliability
ⓘ
versatility in orbit insertion ⓘ |
| notableRecord | launched 104 satellites in a single mission (PSLV-C37) ⓘ |
| operator | Indian Space Research Organisation ⓘ |
| orbitTypeSupported |
geosynchronous transfer orbit
ⓘ
low Earth orbit ⓘ polar orbit ⓘ sub-GTO missions ⓘ sun-synchronous orbit ⓘ |
| payloadToGTO | about 1300 kg ⓘ |
| payloadToLEO | about 3800 kg ⓘ |
| payloadToSSO | about 1750 kg ⓘ |
| precededBy | ASLV ⓘ |
| primaryLaunchPad |
First Launch Pad, SDSC SHAR
ⓘ
linked to:
First Launch Pad
Second Launch Pad, SDSC SHAR ⓘ
linked to:
SDSC-SHAR Second Launch Pad
|
| propellantTypeFirstStage | solid ⓘ |
| propellantTypeFourthStage | liquid ⓘ |
| propellantTypeSecondStage | liquid ⓘ |
| propellantTypeThirdStage | solid ⓘ |
| relatedProgram |
Indian space program
ⓘ
linked to:
Indian civilian space programme
|
| reliability | considered highly reliable ⓘ |
| role | workhorse launch vehicle of ISRO ⓘ |
| secondStageEngine | Vikas engine ⓘ |
| spaceAgency |
ISRO
ⓘ
linked to:
Indian Space Research Organisation
|
| stages | 4 ⓘ |
| status | operational ⓘ |
| successRate | high ⓘ |
| usedForMission |
Cartosat series satellites
ⓘ
Chandrayaan-1 ⓘ IRNSS / NavIC satellites ⓘ
linked to:
Indian Regional Navigation Satellite System
Mars Orbiter Mission (Mangalyaan) ⓘ
linked to:
Mars Orbiter Mission
Oceansat series satellites ⓘ
linked to:
Oceansat series
RISAT series satellites ⓘ multiple international small 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: PSLV Description of subject: PSLV (Polar Satellite Launch Vehicle) is India’s highly reliable medium-lift launch vehicle developed by ISRO, widely used to deploy satellites into polar and other Earth orbits and to support interplanetary missions.
Referenced by (42)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: PSLV
linked to: PSLV