IRNSS-1D
E907102
IRNSS-1D is an Indian regional navigation satellite that forms part of the NavIC (Indian Regional Navigation Satellite System) constellation, providing precise positioning and timing services over India and surrounding regions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IRNSS-1D canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T11001738 — 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: IRNSS-1D Context triple: [NavIC satellites, hasComponent, IRNSS-1D]
-
A.
IRNSS-1C
IRNSS-1C is an Indian regional navigation satellite that forms part of the NavIC constellation, providing precise positioning and timing services over India and surrounding regions.
-
B.
IRNSS-1B
IRNSS-1B is an Indian regional navigation satellite that forms part of the NavIC constellation, providing precise positioning and timing services over India and surrounding regions.
-
C.
IRNSS
IRNSS (Indian Regional Navigation Satellite System) is India’s autonomous regional satellite navigation system designed to provide accurate position, navigation, and timing services over India and surrounding regions.
-
D.
INSAT-3DR
INSAT-3DR is an Indian geostationary weather satellite designed to provide advanced meteorological observations, search and rescue services, and data relay capabilities.
-
E.
INSAT-4G
INSAT-4G is an Indian communications and meteorological satellite planned as part of the INSAT-4 series to support telecommunication, broadcasting, and weather services.
- 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: IRNSS-1D Target entity description: IRNSS-1D is an Indian regional navigation satellite that forms part of the NavIC (Indian Regional Navigation Satellite System) constellation, providing precise positioning and timing services over India and surrounding regions.
-
A.
IRNSS-1C
IRNSS-1C is an Indian regional navigation satellite that forms part of the NavIC constellation, providing precise positioning and timing services over India and surrounding regions.
-
B.
IRNSS-1B
IRNSS-1B is an Indian regional navigation satellite that forms part of the NavIC constellation, providing precise positioning and timing services over India and surrounding regions.
-
C.
IRNSS
IRNSS (Indian Regional Navigation Satellite System) is India’s autonomous regional satellite navigation system designed to provide accurate position, navigation, and timing services over India and surrounding regions.
-
D.
INSAT-3DR
INSAT-3DR is an Indian geostationary weather satellite designed to provide advanced meteorological observations, search and rescue services, and data relay capabilities.
-
E.
INSAT-4G
INSAT-4G is an Indian communications and meteorological satellite planned as part of the INSAT-4 series to support telecommunication, broadcasting, and weather services.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
NavIC satellite
ⓘ
artificial satellite ⓘ navigation satellite ⓘ |
| belongsToProgram |
Indian Regional Navigation Satellite System programme
ⓘ
linked to:
Indian Regional Navigation Satellite System
NavIC programme ⓘ
linked to:
Indian Regional Navigation Satellite System
|
| constellationSize | 7 satellites for full NavIC constellation ⓘ |
| countryOfOrigin | India ⓘ |
| coverageArea |
India
ⓘ
Indian subcontinent ⓘ
linked to:
South Asia
surrounding regions of India ⓘ |
| frequencyBand |
L5 band
ⓘ
S band ⓘ |
| launchCountry | India ⓘ |
| launchDate |
2015-03-28
ⓘ
28 March 2015 ⓘ |
| launchMass | approximately 1425 kg ⓘ |
| launchSite |
Satish Dhawan Space Centre
ⓘ
Sriharikota ⓘ |
| launchVehicle |
PSLV-C27
ⓘ
PSLV-XL ⓘ |
| manufacturer |
ISRO Satellite Centre
ⓘ
Indian Space Research Organisation ⓘ |
| missionStatus | operational ⓘ |
| missionType | navigation ⓘ |
| operator |
ISRO
ⓘ
linked to:
Indian Space Research Organisation
Indian Space Research Organisation ⓘ |
| orbitRegime | geosynchronous ⓘ |
| orbitType | geosynchronous orbit ⓘ |
| partOf |
Indian Regional Navigation Satellite System
ⓘ
NavIC ⓘ
linked to:
NAVIC regional navigation system
|
| providesService |
restricted service
ⓘ
standard positioning service ⓘ |
| purpose |
positioning
ⓘ
regional navigation ⓘ timing services ⓘ |
| sequenceInConstellation | fourth IRNSS satellite ⓘ |
| spaceAgency | Indian Space Research Organisation ⓘ |
| spacecraftBus | I-1K ⓘ |
| supportsApplications |
aerial navigation
ⓘ
mapping and geodetic data capture ⓘ marine navigation ⓘ terrestrial navigation ⓘ timing applications ⓘ |
| targetUsers |
authorized government users
ⓘ
civilian users ⓘ |
| uses | rubidium atomic clocks ⓘ |
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: IRNSS-1D Description of subject: IRNSS-1D is an Indian regional navigation satellite that forms part of the NavIC (Indian Regional Navigation Satellite System) constellation, providing precise positioning and timing services over India and surrounding regions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.