PSLV fourth stage
E915631
The PSLV fourth stage is the uppermost liquid-fueled stage of India’s Polar Satellite Launch Vehicle, responsible for final orbit insertion and precise deployment of payloads.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PSLV fourth stage canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11291184 — 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 fourth stage Context triple: [PSLV-G, hasStage, PSLV fourth stage]
-
A.
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.
-
B.
PSLV
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.
-
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-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-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.
- 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 fourth stage Target entity description: The PSLV fourth stage is the uppermost liquid-fueled stage of India’s Polar Satellite Launch Vehicle, responsible for final orbit insertion and precise deployment of payloads.
-
A.
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.
-
B.
PSLV
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.
-
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-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-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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
rocket stage
ⓘ
upper stage ⓘ |
| alsoKnownAs |
PS4
ⓘ
PSLV-4 ⓘ |
| associatedProgram | Indian space program ⓘ |
| associatedWith | satellite launch missions from India ⓘ |
| capability |
precise attitude control during payload deployment
ⓘ
restartable orbital maneuvers ⓘ |
| countryOfOrigin | India ⓘ |
| designedFor | high-precision orbit insertion ⓘ |
| enables |
deployment of multiple payloads in different orbits
ⓘ
fine-tuning of orbital parameters ⓘ |
| launchSystem |
PSLV launch system
ⓘ
linked to:
PSLV
|
| launchVehicle |
PSLV
ⓘ
Polar Satellite Launch Vehicle ⓘ |
| launchVehicleFamily |
PSLV family
ⓘ
linked to:
PSLV launch vehicle family
|
| locationDuringLaunch | top of PSLV stack ⓘ |
| manufacturer |
ISRO
ⓘ
linked to:
Indian Space Research Organisation
Indian Space Research Organisation ⓘ |
| missionProfilePhase |
injection into target orbit
ⓘ
payload deployment phase ⓘ |
| missionType | orbital launch missions ⓘ |
| operatedBy |
ISRO
ⓘ
linked to:
Indian Space Research Organisation
Indian Space Research Organisation ⓘ |
| partOf |
PSLV
ⓘ
Polar Satellite Launch Vehicle ⓘ |
| positionInStack |
fourth stage
ⓘ
uppermost stage ⓘ |
| primaryFunction |
final orbit insertion
ⓘ
precise deployment of payloads ⓘ |
| propellantType | liquid propellant ⓘ |
| propulsionType | liquid-fueled ⓘ |
| roleInMission |
performs precise orbital maneuvers
ⓘ
provides final velocity increment ⓘ |
| separationEvent | separates after completion of third stage burn ⓘ |
| stageNumber | 4 ⓘ |
| status | operational ⓘ |
| usedByAgency | Indian Space Research Organisation ⓘ |
| usedByCountry | India ⓘ |
| usedFor |
multi-satellite deployment
ⓘ
orbit circularization ⓘ orbit transfer maneuvers ⓘ placing satellites into final orbit ⓘ precise orbital injection ⓘ |
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 fourth stage Description of subject: The PSLV fourth stage is the uppermost liquid-fueled stage of India’s Polar Satellite Launch Vehicle, responsible for final orbit insertion and precise deployment of payloads.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.