Pegasus XL
E239143
Pegasus XL is an air-launched, three-stage solid-fuel orbital rocket developed by Orbital Sciences Corporation for placing small satellites into low Earth orbit.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Pegasus XL canonical | 14 |
| Pegasus H | 1 |
| Pegasus air-launched rocket | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2169279 — 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: Pegasus XL Context triple: [SCISAT-1, launchVehicle, Pegasus XL]
-
A.
Pegasus
Pegasus is the NATO reporting name for the Boeing KC-46, a modern aerial refueling and strategic military transport aircraft.
-
B.
Airbus Beluga
The Airbus Beluga is a large, whale-shaped cargo aircraft designed for transporting oversized aerospace components and other outsize freight.
-
C.
Stratolaunch carrier aircraft
The Stratolaunch carrier aircraft is a massive twin-fuselage, six-engine aircraft designed to air-launch rockets into space, notable for having the largest wingspan of any airplane ever built.
-
D.
Raytheon Sentinel R1
The Raytheon Sentinel R1 is a British airborne battlefield and ground surveillance aircraft equipped with advanced radar and sensor systems to provide real-time intelligence and reconnaissance support.
-
E.
Sapsan
Sapsan is a high-speed passenger train service in Russia operated by Russian Railways, primarily running between Moscow and St. Petersburg.
- 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: Pegasus XL Target entity description: Pegasus XL is an air-launched, three-stage solid-fuel orbital rocket developed by Orbital Sciences Corporation for placing small satellites into low Earth orbit.
-
A.
Pegasus
Pegasus is the NATO reporting name for the Boeing KC-46, a modern aerial refueling and strategic military transport aircraft.
-
B.
Airbus Beluga
The Airbus Beluga is a large, whale-shaped cargo aircraft designed for transporting oversized aerospace components and other outsize freight.
-
C.
Stratolaunch carrier aircraft
The Stratolaunch carrier aircraft is a massive twin-fuselage, six-engine aircraft designed to air-launch rockets into space, notable for having the largest wingspan of any airplane ever built.
-
D.
Raytheon Sentinel R1
The Raytheon Sentinel R1 is a British airborne battlefield and ground surveillance aircraft equipped with advanced radar and sensor systems to provide real-time intelligence and reconnaissance support.
-
E.
Sapsan
Sapsan is a high-speed passenger train service in Russia operated by Russian Railways, primarily running between Moscow and St. Petersburg.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
air-launched rocket
ⓘ
expendable launch vehicle ⓘ orbital launch vehicle ⓘ |
| carrierAircraftName | Stargazer ⓘ |
| carrierAircraftType | Lockheed L-1011 TriStar ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| developer | Orbital Sciences Corporation ⓘ |
| diameter | approximately 1.27 m ⓘ |
| fairingType | payload fairing ⓘ |
| family | Pegasus rocket family ⓘ |
| firstFlightDate | 1994-06-27 ⓘ |
| firstStageName | Orion 50SXL ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| improvementOver | original Pegasus design ⓘ |
| intendedOrbit | low Earth orbit ⓘ |
| launchAzimuthFlexibility | high ⓘ |
| launchEnvironmentAdvantage |
ability to avoid bad weather at ground sites
ⓘ
reduced atmospheric drag at ignition ⓘ |
| launchMass | approximately 23,000 kg ⓘ |
| launchMethod | air launch ⓘ |
| launchPlatform |
Stargazer L-1011
ⓘ
linked to:
Lockheed L-1011 TriStar
|
| launchServiceProvider |
Northrop Grumman
ⓘ
Orbital ATK ⓘ
linked to:
Orbital Sciences Corporation
Orbital Sciences Corporation ⓘ |
| launchSites |
air-launched near Cape Canaveral
ⓘ
air-launched near Vandenberg Air Force Base ⓘ air-launched over Atlantic Ocean ⓘ air-launched over Pacific Ocean ⓘ |
| length | approximately 17.6 m ⓘ |
| manufacturer |
Northrop Grumman Innovation Systems
ⓘ
linked to:
Northrop Grumman
Orbital Sciences Corporation ⓘ |
| marketSegment | small satellite launch ⓘ |
| notableFeature |
dropped from carrier aircraft before ignition
ⓘ
winged first stage for atmospheric flight ⓘ |
| numberOfStages | 3 ⓘ |
| operator |
Northrop Grumman Space Systems
ⓘ
linked to:
Northrop Grumman Space Technology
Orbital ATK ⓘ
linked to:
Orbital Sciences Corporation
Orbital Sciences Corporation ⓘ |
| primaryUse |
launch of scientific spacecraft
ⓘ
launch of small satellites ⓘ launch of technology demonstration payloads ⓘ |
| propellantType | solid fuel ⓘ |
| secondStageName |
Orion 50XL
ⓘ
linked to:
Orion 50SXL
|
| stagesConfiguration | three-stage solid rocket ⓘ |
| stageSeparation | sequential solid-stage separation ⓘ |
| status | operational ⓘ |
| successorTo | Pegasus ⓘ |
| thirdStageName | Orion 38 ⓘ |
| typicalInclinations | equatorial or mid-inclination LEO ⓘ |
| typicalPayloadMassToLEO | approximately 443 kg ⓘ |
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: Pegasus XL Description of subject: Pegasus XL is an air-launched, three-stage solid-fuel orbital rocket developed by Orbital Sciences Corporation for placing small satellites into low Earth orbit.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
NuSTAR Nuclear Spectroscopic Telescope Array
subject linked to:
GALEX Galaxy Evolution Explorer
linked to: Pegasus XL
linked to: Pegasus XL