International Earth Rotation and Reference Systems Service
E49119
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.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T388568 — 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 Earth Rotation and Reference Systems Service Context triple: [Coordinated Universal Time, governingBody, International Earth Rotation and Reference Systems Service]
-
A.
International Union of Radio Science
The International Union of Radio Science (URSI) is a global scientific organization that promotes research, collaboration, and knowledge exchange in all fields of radio science and electromagnetic waves.
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B.
International Bureau
The International Bureau is the permanent secretariat and administrative center of the Universal Postal Union, responsible for coordinating international postal activities and supporting member countries.
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C.
International Atomic Time
International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
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D.
Institut de Physique du Globe de Paris
The Institut de Physique du Globe de Paris is a renowned French research and higher-education institution specializing in Earth sciences, including geophysics, volcanology, seismology, and planetary science.
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E.
International Science Council
The International Science Council is a global non-governmental organization that brings together scientific unions and national academies to promote international scientific collaboration and influence science policy worldwide.
- 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 Earth Rotation and Reference Systems Service Target entity description: 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.
-
A.
International Union of Radio Science
The International Union of Radio Science (URSI) is a global scientific organization that promotes research, collaboration, and knowledge exchange in all fields of radio science and electromagnetic waves.
-
B.
International Bureau
The International Bureau is the permanent secretariat and administrative center of the Universal Postal Union, responsible for coordinating international postal activities and supporting member countries.
-
C.
International Atomic Time
International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
-
D.
Institut de Physique du Globe de Paris
The Institut de Physique du Globe de Paris is a renowned French research and higher-education institution specializing in Earth sciences, including geophysics, volcanology, seismology, and planetary science.
-
E.
International Science Council
The International Science Council is a global non-governmental organization that brings together scientific unions and national academies to promote international scientific collaboration and influence science policy worldwide.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | international scientific organization ⓘ |
| abbreviation | IERS ⓘ |
| cooperatesWith |
Bureau International des Poids et Mesures
ⓘ
linked to:
International Bureau of Weights and Measures
International Astronomical Union ⓘ International DORIS Service ⓘ International GNSS Service ⓘ International Laser Ranging Service ⓘ International Union of Geodesy and Geophysics ⓘ International VLBI Service for Geodesy and Astrometry ⓘ |
| coordinates | global geodetic observing system components ⓘ |
| dataFormat |
reference frame realizations
ⓘ
time series ⓘ |
| field |
astronomy
ⓘ
geodesy ⓘ geophysics ⓘ navigation ⓘ timekeeping ⓘ |
| hasComponent |
IERS Analysis Centres
ⓘ
IERS Conventions Centre ⓘ IERS Earth Orientation Centre ⓘ IERS ICRS Centre ⓘ IERS ITRS Centre ⓘ
linked to:
International Terrestrial Reference System
IERS Rapid Service/Prediction Centre ⓘ |
| maintains |
International Celestial Reference Frame
ⓘ
linked to:
International Celestial Reference System
International Celestial Reference System ⓘ International Terrestrial Reference Frame ⓘ
linked to:
International Terrestrial Reference System
International Terrestrial Reference System ⓘ |
| monitors |
irregularities in Earth rotation
ⓘ
polar motion of Earth ⓘ variations in length of day ⓘ |
| provides |
Earth Orientation Parameters
ⓘ
UT1–UTC values ⓘ length of day variations ⓘ polar motion data ⓘ precession and nutation data ⓘ |
| publishes |
Earth orientation parameter series
ⓘ
IERS Bulletins ⓘ IERS Conventions ⓘ |
| purpose |
coordinating reference frames for geodesy and astronomy
ⓘ
maintaining global reference systems ⓘ monitoring Earth rotation ⓘ providing Earth orientation parameters ⓘ |
| scope | global ⓘ |
| usedFor |
global positioning and GNSS applications
ⓘ
maintenance of Coordinated Universal Time ⓘ precise satellite orbit determination ⓘ realization of celestial reference frames ⓘ realization of terrestrial reference frames ⓘ scientific studies of Earth rotation ⓘ space navigation ⓘ |
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 Earth Rotation and Reference Systems Service Description of subject: 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.
Referenced by (43)
Full triples — surface form annotated when it differs from this entity's canonical label.
Coordinated Universal Time
→
governingBody
→
International Earth Rotation and Reference Systems Service
ⓘ
Coordinated Universal Time
→
leapSecondDecisionBy
→
International Earth Rotation and Reference Systems Service
ⓘ
subject linked to:
United States Naval Observatory, Washington, D.C.
linked to: International Earth Rotation and Reference Systems Service
linked to: International Earth Rotation and Reference Systems Service
International Earth Rotation and Reference Systems Service
→
hasComponent
→
IERS Earth Orientation Centre
ⓘ
linked to: International Earth Rotation and Reference Systems Service
International Earth Rotation and Reference Systems Service
→
hasComponent
→
IERS Conventions Centre
ⓘ
linked to: International Earth Rotation and Reference Systems Service
linked to: International Earth Rotation and Reference Systems Service
Earth-centered Earth-fixed
→
definedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
linked to: International Earth Rotation and Reference Systems Service
International Terrestrial Reference System
→
maintainedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
linked to: International Earth Rotation and Reference Systems Service
International Celestial Reference System
→
maintainedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
linked to: International Earth Rotation and Reference Systems Service
Earth Orientation Parameters
→
publishedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
International GNSS Service
→
collaboratesWith
→
International Earth Rotation and Reference Systems Service
ⓘ
International VLBI Service for Geodesy and Astrometry
→
collaboratesWith
→
International Earth Rotation and Reference Systems Service
ⓘ
International Laser Ranging Service
→
collaboratesWith
→
International Earth Rotation and Reference Systems Service
ⓘ
International DORIS Service
→
collaboratesWith
→
International Earth Rotation and Reference Systems Service
ⓘ
subject linked to:
IERS Conventions
IERS ICRS Centre
→
parentOrganization
→
International Earth Rotation and Reference Systems Service
ⓘ
IERS Rapid Service/Prediction Centre
→
partOf
→
International Earth Rotation and Reference Systems Service
ⓘ
CIPM Consultative Committee for Time and Frequency
→
coordinatesWith
→
International Earth Rotation and Reference Systems Service
ⓘ
International Celestial Reference Frame
→
maintainedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
subject linked to:
ICRF
International Association of Geodesy
→
hasService
→
International Earth Rotation and Reference Systems Service
ⓘ
International Association of Geodesy
→
hasService
→
International Service for the Rotation of the Earth
ⓘ
linked to: International Earth Rotation and Reference Systems Service
IERS data and product centres
→
partOf
→
International Earth Rotation and Reference Systems Service
ⓘ
IERS data and product centres
→
operatedBy
→
International Earth Rotation and Reference Systems Service
ⓘ
IERS data and product centres
→
serves
→
International Earth Rotation and Reference Systems Service
ⓘ