Atlas V 521
E525707
Atlas V 521 is a medium- to heavy-lift variant of the Atlas V launch vehicle, distinguished by its five-meter payload fairing, two solid rocket boosters, and single-engine Centaur upper stage, used primarily for launching large satellites to high orbits.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Atlas V 521 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5458672 — 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: Atlas V 521 Context triple: [Atlas V, configurationOptions, Atlas V 521]
-
A.
Atlas V 541
Atlas V 541 is a heavy-lift configuration of the Atlas V expendable launch system used by NASA to send large interplanetary spacecraft, such as the Curiosity Mars rover, into space.
-
B.
Atlas V 551
Atlas V 551 is a heavy-lift configuration of the Atlas V expendable launch system, featuring a five-meter fairing and five solid rocket boosters, used for high-energy missions such as interplanetary probes.
-
C.
Atlas V 501
Atlas V 501 is a specific configuration of the Atlas V expendable launch vehicle optimized for launching medium-sized payloads, particularly satellites, into orbit.
-
D.
Atlas V 421
Atlas V 421 is a specific medium-lift configuration of the Atlas V launch vehicle, featuring a 4-meter payload fairing, two solid rocket boosters, and a single-engine Centaur upper stage.
-
E.
Atlas V 411
Atlas V 411 is a specific variant of the Atlas V expendable launch vehicle characterized by a single solid rocket booster and a four-meter payload fairing, used to place satellites and spacecraft 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: Atlas V 521 Target entity description: Atlas V 521 is a medium- to heavy-lift variant of the Atlas V launch vehicle, distinguished by its five-meter payload fairing, two solid rocket boosters, and single-engine Centaur upper stage, used primarily for launching large satellites to high orbits.
-
A.
Atlas V 541
Atlas V 541 is a heavy-lift configuration of the Atlas V expendable launch system used by NASA to send large interplanetary spacecraft, such as the Curiosity Mars rover, into space.
-
B.
Atlas V 551
Atlas V 551 is a heavy-lift configuration of the Atlas V expendable launch system, featuring a five-meter fairing and five solid rocket boosters, used for high-energy missions such as interplanetary probes.
-
C.
Atlas V 501
Atlas V 501 is a specific configuration of the Atlas V expendable launch vehicle optimized for launching medium-sized payloads, particularly satellites, into orbit.
-
D.
Atlas V 421
Atlas V 421 is a specific medium-lift configuration of the Atlas V launch vehicle, featuring a 4-meter payload fairing, two solid rocket boosters, and a single-engine Centaur upper stage.
-
E.
Atlas V 411
Atlas V 411 is a specific variant of the Atlas V expendable launch vehicle characterized by a single solid rocket booster and a four-meter payload fairing, used to place satellites and spacecraft into orbit.
- F. None of above. chosen
Statements (34)
| Predicate | Object |
|---|---|
| instanceOf |
Atlas V launch vehicle configuration
ⓘ
expendable launch vehicle ⓘ orbital launch vehicle ⓘ |
| configurationCodeMeaning |
1 indicates single-engine Centaur upper stage
ⓘ
2 indicates two solid rocket boosters ⓘ 5 indicates five-meter payload fairing ⓘ |
| coreStageEngineType |
RD-180 engine
ⓘ
linked to:
RD-180
|
| coreStageOxidizer | liquid oxygen ⓘ |
| coreStagePropellant | RP-1 kerosene ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designFeature |
five-meter payload fairing
ⓘ
single-engine Centaur upper stage ⓘ two solid rocket boosters ⓘ |
| fairingDiameter | 5-meter payload fairing ⓘ |
| hasPayloadFairing | 5 m class payload fairing ⓘ |
| hasSolidRocketBoosterCount | 2 ⓘ |
| hasSolidRocketBoosterType | AJ-60A solid rocket booster ⓘ |
| launchServiceProvider | United Launch Alliance ⓘ |
| launchVehicleFamily | Atlas V ⓘ |
| liftClass | medium- to heavy-lift launch vehicle ⓘ |
| manufacturer | United Launch Alliance ⓘ |
| namingScheme | Atlas V XYZ configuration code ⓘ |
| partOf |
Atlas V family
ⓘ
linked to:
Atlas V
|
| staging | two-stage launch vehicle ⓘ |
| status | operational ⓘ |
| typicalDestinationOrbit |
geosynchronous transfer orbit
ⓘ
high Earth orbit ⓘ |
| typicalMissionProfile | launching large satellites to high orbits ⓘ |
| upperStage | Centaur upper stage ⓘ |
| upperStageEngineCount | 1 ⓘ |
| upperStageEngineType | RL10 engine ⓘ |
| upperStageOxidizer | liquid oxygen ⓘ |
| upperStagePropellant | liquid hydrogen ⓘ |
| usesLaunchPad | Cape Canaveral Space Launch Complex 41 ⓘ |
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: Atlas V 521 Description of subject: Atlas V 521 is a medium- to heavy-lift variant of the Atlas V launch vehicle, distinguished by its five-meter payload fairing, two solid rocket boosters, and single-engine Centaur upper stage, used primarily for launching large satellites to high orbits.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.