Ouna (VLBI satellite)
E440080
Ouna is a small Japanese VLBI (Very Long Baseline Interferometry) radio satellite used in the SELENE (Kaguya) lunar mission to conduct precise lunar gravity and geodesy measurements.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ouna (VLBI satellite) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4431631 — 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: Ouna (VLBI satellite) Context triple: [Kaguya (SELENE), carriedSubsatellite, Ouna (VLBI 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.
Akari (infrared satellite)
Akari (infrared satellite) was a Japanese infrared astronomy space telescope that conducted an all-sky survey to study celestial objects from the near- to far-infrared wavelengths.
-
D.
Alouette satellites
The Alouette satellites were pioneering Canadian scientific spacecraft launched in the 1960s to study the ionosphere, marking Canada as one of the first nations to design and build its own satellite.
-
E.
Sapphire (satellite)
Sapphire is a Canadian military surveillance satellite designed to track space objects and contribute to space situational awareness.
- 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: Ouna (VLBI satellite) Target entity description: Ouna is a small Japanese VLBI (Very Long Baseline Interferometry) radio satellite used in the SELENE (Kaguya) lunar mission to conduct precise lunar gravity and geodesy measurements.
-
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.
Akari (infrared satellite)
Akari (infrared satellite) was a Japanese infrared astronomy space telescope that conducted an all-sky survey to study celestial objects from the near- to far-infrared wavelengths.
-
D.
Alouette satellites
The Alouette satellites were pioneering Canadian scientific spacecraft launched in the 1960s to study the ionosphere, marking Canada as one of the first nations to design and build its own satellite.
-
E.
Sapphire (satellite)
Sapphire is a Canadian military surveillance satellite designed to track space objects and contribute to space situational awareness.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
VLBI radio satellite
ⓘ
artificial satellite ⓘ spacecraft used for lunar exploration ⓘ |
| abbreviation |
VLBI
ⓘ
linked to:
Very Long Baseline Interferometry
|
| associatedWith |
Kaguya mission
ⓘ
linked to:
Kaguya (SELENE) lunar orbiter
SELENE lunar orbiter ⓘ
linked to:
Kaguya (SELENE) lunar orbiter
|
| category |
Japanese spacecraft
ⓘ
lunar satellites ⓘ spacecraft using VLBI ⓘ |
| communicationBand | radio frequencies ⓘ |
| countryOfOrigin | Japan ⓘ |
| dataType |
geodetic data
ⓘ
gravity field data ⓘ radio tracking data ⓘ |
| launchContext | launched as part of the SELENE (Kaguya) mission ⓘ |
| launchCountry | Japan ⓘ |
| locationDuringMission | lunar orbit ⓘ |
| measurementMethod | VLBI tracking of radio signals ⓘ |
| missionGoal |
high-precision mapping of the lunar gravity field
ⓘ
improvement of lunar interior models ⓘ refinement of lunar geodetic reference frame ⓘ |
| missionType |
lunar geodesy
ⓘ
lunar gravity measurement ⓘ radio science ⓘ |
| operator |
JAXA
ⓘ
linked to:
Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency ⓘ |
| orbits | Moon ⓘ |
| partOfMission |
Kaguya
ⓘ
SELENE ⓘ |
| primaryTechnique | Very Long Baseline Interferometry ⓘ |
| scientificDiscipline |
geodesy
ⓘ
planetary science ⓘ radio astronomy ⓘ |
| spaceAgency |
JAXA
ⓘ
linked to:
Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency ⓘ |
| supportsMission |
SELENE main orbiter
ⓘ
linked to:
Kaguya (SELENE) lunar orbiter
|
| targetBody | Moon ⓘ |
| usedFor |
improving lunar gravity models
ⓘ
lunar geodetic measurements ⓘ precise determination of lunar gravity field ⓘ tracking the SELENE main orbiter ⓘ |
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: Ouna (VLBI satellite) Description of subject: Ouna is a small Japanese VLBI (Very Long Baseline Interferometry) radio satellite used in the SELENE (Kaguya) lunar mission to conduct precise lunar gravity and geodesy measurements.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Kaguya (SELENE) lunar orbiter