TD-1A
E422018
TD-1A was a European Space Research Organisation astronomical satellite dedicated primarily to ultraviolet sky surveys and stellar observations in the early 1970s.
All labels observed (1)
| Label | Occurrences |
|---|---|
| TD-1A canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4214720 — 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: TD-1A Context triple: [European Space Research Organisation, notableMission, TD-1A]
-
A.
TR-1A
The TR-1A is a high-altitude tactical reconnaissance aircraft developed from the Lockheed U-2, optimized for battlefield surveillance and intelligence-gathering missions.
-
B.
TA-4J
The TA-4J is a two-seat, trainer version of the Douglas A-4 Skyhawk used primarily by the U.S. Navy and Marine Corps for advanced jet and carrier training.
-
C.
TX-12
TX-12 is a United States congressional district in north-central Texas that includes much of Fort Worth and surrounding areas and elects a member to the U.S. House of Representatives.
-
D.
T-29
T-29 is a U.S. Air Force military trainer aircraft variant of the Convair 240 series used primarily for navigation and radar training.
-
E.
Termunten
Termunten is a small village in the province of Groningen in the northeastern Netherlands, situated near the Ems estuary and the Wadden Sea.
- 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: TD-1A Target entity description: TD-1A was a European Space Research Organisation astronomical satellite dedicated primarily to ultraviolet sky surveys and stellar observations in the early 1970s.
-
A.
TR-1A
The TR-1A is a high-altitude tactical reconnaissance aircraft developed from the Lockheed U-2, optimized for battlefield surveillance and intelligence-gathering missions.
-
B.
TA-4J
The TA-4J is a two-seat, trainer version of the Douglas A-4 Skyhawk used primarily by the U.S. Navy and Marine Corps for advanced jet and carrier training.
-
C.
TX-12
TX-12 is a United States congressional district in north-central Texas that includes much of Fort Worth and surrounding areas and elects a member to the U.S. House of Representatives.
-
D.
T-29
T-29 is a U.S. Air Force military trainer aircraft variant of the Convair 240 series used primarily for navigation and radar training.
-
E.
Termunten
Termunten is a small village in the province of Groningen in the northeastern Netherlands, situated near the Ems estuary and the Wadden Sea.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical satellite
ⓘ
space telescope ⓘ ultraviolet space observatory ⓘ |
| alsoKnownAs | TD-1 ⓘ |
| apsis | gee ⓘ |
| attitudeControl | three-axis stabilized ⓘ |
| catalogProduced | TD-1 ultraviolet stellar catalog ONNED1 ⓘ |
| countryOfOperator | Europe NERFINISHED ⓘ |
| dataUsedFor |
galactic structure studies
ⓘ
interstellar extinction studies ⓘ stellar ultraviolet flux measurements ⓘ |
| inclination | 97.6 degrees ⓘ |
| launchContractor | NASA ONNED1 ⓘ |
| launchCountry |
United States of America
ⓘ
surface form:
United States
|
| launchDate | 1972-03-12 ⓘ |
| launchSite | Vandenberg Air Force Base NERFINISHED ⓘ |
| launchVehicle | Thor-Delta rocket NERFINISHED ⓘ |
| missionDuration | about 2 years ⓘ |
| missionEnd | 1974 ⓘ |
| missionStart | 1972 ⓘ |
| missionType |
astronomy
ⓘ
ultraviolet sky survey ⓘ |
| namedBy | European Space Research Organisation NERFINISHED ⓘ |
| notableResult | one of the first full-sky ultraviolet surveys ⓘ |
| observedObjectType |
galaxies
ⓘ
quasars ⓘ stars ⓘ |
| operatedInDecade | 1970s ⓘ |
| operator |
ESRO
NERFINISHED
ⓘ
European Space Research Organisation NERFINISHED ⓘ |
| orbitRegime | Earth orbit ONNED1 ⓘ |
| orbitType | low Earth orbit ⓘ |
| powerSource | solar panels ⓘ |
| primaryObjective |
stellar observations
ⓘ
ultraviolet sky surveys ⓘ |
| program | ESRO scientific satellite program ⓘ |
| scientificDiscipline |
astrophysics
ⓘ
space science ⓘ |
| spaceAgencyPredecessorOf | European Space Agency ONNED1 ⓘ |
| spacecraftBus | ESRO scientific satellite bus ⓘ |
| status | mission completed ⓘ |
| successorAgency | ESA NERFINISHED ⓘ |
| surveyType | all-sky survey ⓘ |
| wavelengthCoverage |
ultraviolet
ⓘ
visible ⓘ |
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: TD-1A Description of subject: TD-1A was a European Space Research Organisation astronomical satellite dedicated primarily to ultraviolet sky surveys and stellar observations in the early 1970s.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.