Sapphire (satellite)
E259994
Sapphire is a Canadian military surveillance satellite designed to track space objects and contribute to space situational awareness.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sapphire (satellite) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2372862 — 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: Sapphire (satellite) Context triple: [NEOSSat, sharesLaunchWith, Sapphire (satellite)]
-
A.
ANIK C2 communications satellite
ANIK C2 is a Canadian commercial communications satellite used to provide telecommunications and broadcasting services.
-
B.
PALAPA B1 communications satellite
PALAPA B1 was an Indonesian communications satellite launched in the early 1980s to expand the country's domestic and regional telecommunications capabilities.
-
C.
GSAT-1
GSAT-1 is an Indian communications satellite that served as the inaugural payload for the Geosynchronous Satellite Launch Vehicle (GSLV) program.
-
D.
SCISAT-1
SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
-
E.
Cygnus spacecraft
The Cygnus spacecraft is an uncrewed commercial cargo vehicle developed by Northrop Grumman to deliver supplies and scientific equipment to the International Space Station.
- 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: Sapphire (satellite) Target entity description: Sapphire is a Canadian military surveillance satellite designed to track space objects and contribute to space situational awareness.
-
A.
ANIK C2 communications satellite
ANIK C2 is a Canadian commercial communications satellite used to provide telecommunications and broadcasting services.
-
B.
PALAPA B1 communications satellite
PALAPA B1 was an Indonesian communications satellite launched in the early 1980s to expand the country's domestic and regional telecommunications capabilities.
-
C.
GSAT-1
GSAT-1 is an Indian communications satellite that served as the inaugural payload for the Geosynchronous Satellite Launch Vehicle (GSLV) program.
-
D.
SCISAT-1
SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
-
E.
Cygnus spacecraft
The Cygnus spacecraft is an uncrewed commercial cargo vehicle developed by Northrop Grumman to deliver supplies and scientific equipment to the International Space Station.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Canadian military satellite
ⓘ
space situational awareness satellite ⓘ surveillance satellite ⓘ |
| catalogs | resident space objects ⓘ |
| contractor | COM DEV International ⓘ |
| contributesTo | United States Space Surveillance Network ⓘ |
| countryOfOrigin | Canada ⓘ |
| customer |
Department of National Defence (Canada)
ⓘ
linked to:
Department of National Defence
|
| dataProduct | space object tracking data ⓘ |
| dataUser |
Canadian Department of National Defence
ⓘ
linked to:
Department of National Defence
United States Department of Defense ⓘ
linked to:
Department of Defense
|
| inclination | 98.0 degrees ⓘ |
| isPartOf | Canadian space surveillance capability ⓘ |
| launchCountry | India ⓘ |
| launchDate | 2013-02-25 ⓘ |
| launchProvider | Indian Space Research Organisation ⓘ |
| launchSite | Satish Dhawan Space Centre ⓘ |
| launchVehicle | PSLV-CA ⓘ |
| manufacturer | MDA (MacDonald, Dettwiler and Associates) ⓘ |
| mass | approximately 148 kilograms ⓘ |
| missionDurationDesign | 5 years ⓘ |
| missionType |
space situational awareness
ⓘ
space surveillance ⓘ |
| namedAfter | sapphire (gemstone) ⓘ |
| observes |
objects in geostationary orbit
ⓘ
objects in highly elliptical orbit ⓘ objects in medium Earth orbit ⓘ |
| operator |
Canadian Armed Forces
ⓘ
linked to:
Canadian forces
Department of National Defence (Canada) ⓘ
linked to:
Department of National Defence
|
| orbitPeriod | approximately 97 minutes ⓘ |
| orbitRegime | Low Earth orbit ⓘ |
| orbitType | Sun-synchronous orbit ⓘ |
| primeContractor | MDA (MacDonald, Dettwiler and Associates) ⓘ |
| program | Canadian Space Surveillance System ⓘ |
| purpose |
contribute to space situational awareness
ⓘ
support Canadian and allied space operations ⓘ track space objects ⓘ |
| sensorType | optical telescope ⓘ |
| spaceAgencyPartner | Canadian Space Agency ⓘ |
| spacecraftBus | small satellite bus ⓘ |
| status | operational ⓘ |
| supports |
North American Aerospace Defense Command (NORAD)
ⓘ
linked to:
North American Aerospace Defense Command
collision avoidance for satellites ⓘ space traffic management ⓘ |
| tracks |
Earth-orbiting satellites
ⓘ
space debris ⓘ |
| uses | ground stations in Canada ⓘ |
| wavelength | visible spectrum ⓘ |
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: Sapphire (satellite) Description of subject: Sapphire is a Canadian military surveillance satellite designed to track space objects and contribute to space situational awareness.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.