International Earth Rotation and Reference Systems Service

All labels observed (6)

Label	Occurrences
International Earth Rotation and Reference Systems Service canonical	17
IERS	4
IERS Bulletins	1
IERS Conventions Centre	1
IERS Earth Orientation Centre	1
International Celestial Reference Frame	1

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.
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
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 ⓘ linked to: International Earth Rotation and Reference Systems Service
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 ⓘ linked to: International Earth Rotation and Reference Systems Service IERS Earth Orientation Centre ⓘ linked to: International Earth Rotation and Reference Systems Service 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 ⓘ linked to: International Earth Rotation and Reference Systems Service 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

Referenced by (25)

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 ⓘ

Prime Meridian → definedBy → International Earth Rotation and Reference Systems Service ⓘ

United States Naval Observatory → contributesTo → International Celestial Reference Frame ⓘ

subject linked to: United States Naval Observatory, Washington, D.C.