DemoSat
E846506
DemoSat was a non-operational test payload used on the maiden flight of the Delta IV Heavy rocket to validate the vehicle’s performance and systems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| DemoSat canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10183703 — 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: DemoSat Context triple: [Delta IV Heavy, firstFlightMission, DemoSat]
-
A.
KidSat
KidSat was an early educational space science program that allowed students to request and analyze Earth images taken from cameras aboard Space Shuttle missions, later evolving into the Sally Ride EarthKAM project.
-
B.
Engineering Test Satellite series
The Engineering Test Satellite series is a group of Japanese experimental spacecraft developed to demonstrate and validate advanced space technologies and systems in orbit.
-
C.
Telesat
Telesat is a Canadian satellite communications company that operates and manages telecommunications satellites providing broadcast and broadband services worldwide.
-
D.
Satellite
"Satellite" is a popular early song by the Dave Matthews Band, known for its intricate guitar work and reflective lyrics.
-
E.
Satellite
"Satellite" is a politically charged punk rock song by American band Rise Against, known for its anthemic sound and socially conscious lyrics.
- 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: DemoSat Target entity description: DemoSat was a non-operational test payload used on the maiden flight of the Delta IV Heavy rocket to validate the vehicle’s performance and systems.
-
A.
KidSat
KidSat was an early educational space science program that allowed students to request and analyze Earth images taken from cameras aboard Space Shuttle missions, later evolving into the Sally Ride EarthKAM project.
-
B.
Engineering Test Satellite series
The Engineering Test Satellite series is a group of Japanese experimental spacecraft developed to demonstrate and validate advanced space technologies and systems in orbit.
-
C.
Telesat
Telesat is a Canadian satellite communications company that operates and manages telecommunications satellites providing broadcast and broadband services worldwide.
-
D.
Satellite
"Satellite" is a popular early song by the Dave Matthews Band, known for its intricate guitar work and reflective lyrics.
-
E.
Satellite
"Satellite" is a politically charged punk rock song by American band Rise Against, known for its anthemic sound and socially conscious lyrics.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
non-operational satellite
ⓘ
test payload ⓘ |
| associatedWithEvent | maiden flight of Delta IV Heavy ⓘ |
| hasAlternativeName |
Delta IV Heavy DemoSat payload
ⓘ
linked to:
Delta IV Heavy
|
| hasNo |
communications payload
ⓘ
operational instruments ⓘ propulsion system ⓘ |
| launchComplex | Space Launch Complex 37B ⓘ |
| launchCountry |
United States
ⓘ
linked to:
United States of America
|
| launchDate | 2004-12-21 ⓘ |
| launchDatePrecision | day ⓘ |
| launchOperator |
Boeing
ⓘ
United Launch Alliance ⓘ |
| launchOutcome | reached lower-than-planned orbit ⓘ |
| launchSite |
Cape Canaveral Air Force Station
ⓘ
linked to:
Cape Canaveral Space Force Station
|
| launchVehicle | Delta IV Heavy ⓘ |
| manufacturer | Boeing ⓘ |
| missionType |
demonstration mission
ⓘ
test flight ⓘ |
| orbitType | suboptimal orbit ⓘ |
| payloadFunction | mass simulator ⓘ |
| payloadStatus | non-operational ⓘ |
| program | Evolved Expendable Launch Vehicle program ⓘ |
| purpose |
validate Delta IV Heavy systems
ⓘ
validate Delta IV Heavy vehicle performance ⓘ |
| relatedTo |
Delta IV family of rockets
ⓘ
linked to:
Delta IV
test payloads ⓘ |
| result | partial failure ⓘ |
| spacecraftBus | dummy structure ⓘ |
| spaceDomain | orbital launch ⓘ |
| usedFor |
data collection on launch vehicle performance
ⓘ
qualification of Delta IV Heavy design ⓘ |
| usedOnRocket | Delta IV Heavy ⓘ |
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: DemoSat Description of subject: DemoSat was a non-operational test payload used on the maiden flight of the Delta IV Heavy rocket to validate the vehicle’s performance and systems.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.