International VLBI Service for Geodesy and Astrometry
E242108
The International VLBI Service for Geodesy and Astrometry is an international organization that coordinates Very Long Baseline Interferometry observations to provide precise measurements of Earth’s rotation, reference frames, and celestial positions.
All labels observed (2)
| Label | Occurrences |
|---|---|
| International VLBI Service for Geodesy and Astrometry canonical | 4 |
| VLBI Analysis Centres | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2184535 — 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: International VLBI Service for Geodesy and Astrometry Context triple: [International Earth Rotation and Reference Systems Service, cooperatesWith, International VLBI Service for Geodesy and Astrometry]
-
A.
Very Long Baseline Interferometry
Very Long Baseline Interferometry is a radio astronomy technique that combines signals from widely separated antennas to achieve extremely high angular resolution and precisely measure geodetic and astronomical parameters.
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B.
Very Long Baseline Array
The Very Long Baseline Array is a continent-spanning network of ten radio telescopes used for high-resolution astronomical observations through very long baseline interferometry.
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C.
International Earth Rotation and Reference Systems Service
The International Earth Rotation and Reference Systems Service (IERS) is an international organization that monitors Earth's rotation and maintains global reference systems used for precise timekeeping, navigation, and geodesy.
-
D.
National Astronomy and Ionosphere Center
The National Astronomy and Ionosphere Center was a U.S. research organization best known for operating the Arecibo Observatory and conducting pioneering work in radio astronomy and atmospheric science.
-
E.
Joint ALMA Observatory
The Joint ALMA Observatory is the international organization responsible for managing and operating the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope facility in Chile.
- 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: International VLBI Service for Geodesy and Astrometry Target entity description: The International VLBI Service for Geodesy and Astrometry is an international organization that coordinates Very Long Baseline Interferometry observations to provide precise measurements of Earth’s rotation, reference frames, and celestial positions.
-
A.
Very Long Baseline Interferometry
Very Long Baseline Interferometry is a radio astronomy technique that combines signals from widely separated antennas to achieve extremely high angular resolution and precisely measure geodetic and astronomical parameters.
-
B.
Very Long Baseline Array
The Very Long Baseline Array is a continent-spanning network of ten radio telescopes used for high-resolution astronomical observations through very long baseline interferometry.
-
C.
International Earth Rotation and Reference Systems Service
The International Earth Rotation and Reference Systems Service (IERS) is an international organization that monitors Earth's rotation and maintains global reference systems used for precise timekeeping, navigation, and geodesy.
-
D.
National Astronomy and Ionosphere Center
The National Astronomy and Ionosphere Center was a U.S. research organization best known for operating the Arecibo Observatory and conducting pioneering work in radio astronomy and atmospheric science.
-
E.
Joint ALMA Observatory
The Joint ALMA Observatory is the international organization responsible for managing and operating the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope facility in Chile.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
geodetic service organization
ⓘ
international scientific organization ⓘ |
| abbreviation | IVS ⓘ |
| application |
global reference frame realization
ⓘ
precise Earth orientation monitoring ⓘ support of satellite orbit determination ⓘ |
| collaboratesWith |
International DORIS Service
ⓘ
International Earth Rotation and Reference Systems Service ⓘ International GNSS Service ⓘ International Laser Ranging Service ⓘ |
| coordinates |
VLBI analysis activities
ⓘ
VLBI data centers ⓘ global VLBI observing campaigns ⓘ |
| dataPolicy | open data for scientific use ⓘ |
| dataType | VLBI delay and phase observables ⓘ |
| field |
astrometry
ⓘ
geodesy ⓘ |
| foundedBy | International Association of Geodesy ⓘ |
| hasMembers |
VLBI analysis centers
ⓘ
VLBI correlators ⓘ VLBI data centers ⓘ VLBI observing stations ⓘ |
| hasMethod | group delay measurements of extragalactic radio sources ⓘ |
| hasProductUser |
astronomical community
ⓘ
geophysical research community ⓘ national mapping agencies ⓘ space agencies ⓘ |
| hasScope | global ⓘ |
| isComponentOf |
Global Geodetic Observing System
ⓘ
IAG Service structure ⓘ |
| observes |
extragalactic radio sources
ⓘ
quasars for reference frame realization ⓘ |
| parentOrganization | International Association of Geodesy ⓘ |
| provides |
Earth Orientation Parameters
ⓘ
celestial reference frame products ⓘ source position catalogs ⓘ station position and velocity solutions ⓘ terrestrial reference frame products ⓘ |
| purpose |
to coordinate global VLBI observations for geodesy and astrometry
ⓘ
to determine precise celestial source positions ⓘ to provide precise measurements of Earth rotation ⓘ to realize and maintain terrestrial and celestial reference frames ⓘ |
| shortName | IVS ⓘ |
| supports |
determination of nutation and precession
ⓘ
maintenance of the International Celestial Reference Frame ⓘ monitoring of Earth rotation variations ⓘ realization of the International Terrestrial Reference Frame ⓘ space geodesy infrastructure ⓘ |
| usesTechnique | Very Long Baseline Interferometry ⓘ |
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: International VLBI Service for Geodesy and Astrometry Description of subject: The International VLBI Service for Geodesy and Astrometry is an international organization that coordinates Very Long Baseline Interferometry observations to provide precise measurements of Earth’s rotation, reference frames, and celestial positions.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
International Earth Rotation and Reference Systems Service
→
cooperatesWith
→
International VLBI Service for Geodesy and Astrometry
ⓘ
Very Long Baseline Interferometry
→
standardizedBy
→
International VLBI Service for Geodesy and Astrometry
ⓘ
International Laser Ranging Service
→
collaboratesWith
→
International VLBI Service for Geodesy and Astrometry
ⓘ
this entity surface form:
VLBI Analysis Centres