Delta 4000
E917631
Delta 4000 is an American expendable launch vehicle series derived from the Delta family, used primarily in the early 1990s to place communications and weather satellites into orbit.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Delta 4000 canonical | 2 |
| Delta 4000 series | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T11291226 — 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: Delta 4000 Context triple: [INSAT-1D, launchVehicleFamily, Delta 4000]
-
A.
Delta 3000
Delta 3000 is a series of American expendable launch vehicles, part of the Delta rocket family, used primarily in the 1980s to place communications and weather satellites into orbit.
-
B.
Delta 4925
Delta 4925 is a variant of the American Delta expendable launch vehicle family used to place satellites into orbit.
-
C.
Delta 3910
Delta 3910 is an American expendable launch vehicle variant from the Delta rocket family, used primarily in the 1980s to place communications and weather satellites into orbit.
-
D.
Delta 2914
Delta 2914 was a variant of the Delta expendable launch vehicle family used by NASA to place scientific satellites, including the International Ultraviolet Explorer, into orbit.
-
E.
Delta IV
Delta IV is an expendable heavy-lift launch vehicle family developed by Boeing and operated by United Launch Alliance for launching military, government, and commercial payloads 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: Delta 4000 Target entity description: Delta 4000 is an American expendable launch vehicle series derived from the Delta family, used primarily in the early 1990s to place communications and weather satellites into orbit.
-
A.
Delta 3000
Delta 3000 is a series of American expendable launch vehicles, part of the Delta rocket family, used primarily in the 1980s to place communications and weather satellites into orbit.
-
B.
Delta 4925
Delta 4925 is a variant of the American Delta expendable launch vehicle family used to place satellites into orbit.
-
C.
Delta 3910
Delta 3910 is an American expendable launch vehicle variant from the Delta rocket family, used primarily in the 1980s to place communications and weather satellites into orbit.
-
D.
Delta 2914
Delta 2914 was a variant of the Delta expendable launch vehicle family used by NASA to place scientific satellites, including the International Ultraviolet Explorer, into orbit.
-
E.
Delta IV
Delta IV is an expendable heavy-lift launch vehicle family developed by Boeing and operated by United Launch Alliance for launching military, government, and commercial payloads into orbit.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
American launch vehicle
ⓘ
expendable launch vehicle series ⓘ orbital launch vehicle ⓘ |
| application |
commercial satellite launches
ⓘ
government satellite launches ⓘ |
| boostersUsed | solid rocket boosters ⓘ |
| configurationBasedOn |
Delta 3000
ⓘ
Delta 5000 ⓘ
linked to:
Delta 5000 series
|
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| derivedFrom |
Delta rocket family
ⓘ
linked to:
Delta family of rockets
|
| era | post-Delta 3000 era ⓘ |
| family |
Delta rocket family
ⓘ
linked to:
Delta rocket
|
| launchCapability |
geosynchronous transfer orbit
ⓘ
low Earth orbit ⓘ |
| launchesOccurredInDecade | 1990s ⓘ |
| launchMethod | expendable ⓘ |
| launchSiteUsed |
Cape Canaveral Air Force Station
ⓘ
linked to:
Cape Canaveral Space Force Station
|
| launchVehicleType | medium-lift launch vehicle ⓘ |
| manufacturer | McDonnell Douglas ⓘ |
| propellantTypeFirstStage | liquid fuel ⓘ |
| propellantTypeUpperStage | liquid fuel ⓘ |
| rocketStages | two-stage configuration ⓘ |
| status | retired ⓘ |
| successor | Delta II ⓘ |
| usedBy |
NASA
ⓘ
U.S. commercial satellite operators ⓘ |
| usedFor |
placing communications satellites into orbit
ⓘ
placing weather satellites into orbit ⓘ |
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: Delta 4000 Description of subject: Delta 4000 is an American expendable launch vehicle series derived from the Delta family, used primarily in the early 1990s to place communications and weather satellites into orbit.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.