IAU 2000 resolutions
E499558
The IAU 2000 resolutions are a set of internationally adopted astronomical standards that updated fundamental time scales, reference systems, and models used in celestial mechanics and astrometry.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IAU 2000 resolutions canonical | 2 |
| International Astronomical Union resolutions on reference systems | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5150743 — 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: IAU 2000 resolutions Context triple: [Terrestrial Time, refinedIn, IAU 2000 resolutions]
-
A.
IAU 1991 Resolution A4
IAU 1991 Resolution A4 is an International Astronomical Union standard that formalized modern relativistic time scales and reference systems used in astronomy and geodesy.
-
B.
General Assembly of the IAU
The General Assembly of the IAU is the International Astronomical Union’s principal global meeting, where astronomers convene to discuss scientific results, set standards, and make key organizational and nomenclature decisions.
-
C.
IAU Working Groups
IAU Working Groups are specialized expert committees within the International Astronomical Union that focus on specific scientific, technical, or organizational topics in astronomy and astrophysics.
-
D.
International Celestial Reference System
The International Celestial Reference System is the standard, high-precision coordinate framework used in astronomy and geodesy to define positions of celestial objects relative to distant quasars.
-
E.
International Astronomical Union
The International Astronomical Union is the global organization of professional astronomers responsible for standardizing astronomical nomenclature and definitions, including constellations and celestial bodies.
- 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: IAU 2000 resolutions Target entity description: The IAU 2000 resolutions are a set of internationally adopted astronomical standards that updated fundamental time scales, reference systems, and models used in celestial mechanics and astrometry.
-
A.
IAU 1991 Resolution A4
IAU 1991 Resolution A4 is an International Astronomical Union standard that formalized modern relativistic time scales and reference systems used in astronomy and geodesy.
-
B.
General Assembly of the IAU
The General Assembly of the IAU is the International Astronomical Union’s principal global meeting, where astronomers convene to discuss scientific results, set standards, and make key organizational and nomenclature decisions.
-
C.
IAU Working Groups
IAU Working Groups are specialized expert committees within the International Astronomical Union that focus on specific scientific, technical, or organizational topics in astronomy and astrophysics.
-
D.
International Celestial Reference System
The International Celestial Reference System is the standard, high-precision coordinate framework used in astronomy and geodesy to define positions of celestial objects relative to distant quasars.
-
E.
International Astronomical Union
The International Astronomical Union is the global organization of professional astronomers responsible for standardizing astronomical nomenclature and definitions, including constellations and celestial bodies.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
International Astronomical Union resolution
ⓘ
astronomical standard ⓘ set of resolutions ⓘ |
| adoptedAt | 24th General Assembly of the International Astronomical Union NERFINISHED ⓘ |
| adoptedBy | International Astronomical Union NERFINISHED ⓘ |
| adoptionCity | Manchester NERFINISHED ⓘ |
| adoptionCountry | United Kingdom NERFINISHED ⓘ |
| adoptionYear | 2000 ⓘ |
| basisFor |
later refinements of precession-nutation models
ⓘ
subsequent IAU resolutions on reference systems ⓘ |
| concerns |
Terrestrial Time
NERFINISHED
ⓘ
barycentric coordinate time ⓘ geocentric coordinate time ⓘ time transformations in relativity ⓘ |
| defines |
International Celestial Reference Frame
NERFINISHED
ⓘ
International Celestial Reference System NERFINISHED ⓘ |
| field |
astrometry
ⓘ
astronomy ⓘ celestial mechanics ⓘ timekeeping ⓘ |
| includes | IAU 2000A precession-nutation model NERFINISHED ⓘ |
| language | English ⓘ |
| replaces |
earlier IAU standards on reference systems
ⓘ
earlier IAU standards on time scales ⓘ |
| scope |
celestial reference frames
ⓘ
relativistic modeling in astronomy ⓘ solar system dynamics ⓘ |
| standardizes |
Earth rotation modeling
ⓘ
barycentric celestial reference system ⓘ geocentric celestial reference system ⓘ precession-nutation of the Earth ⓘ relativistic reference systems in the solar system ⓘ |
| updates |
fundamental astronomical reference systems
ⓘ
fundamental astronomical time scales ⓘ models used in astrometry ⓘ models used in celestial mechanics ⓘ |
| usedBy |
International Earth Rotation and Reference Systems Service
NERFINISHED
ⓘ
astrometric catalog compilers ⓘ space navigation agencies ⓘ |
| usedFor |
Earth orientation parameter determination
ⓘ
high-precision positional astronomy ⓘ satellite orbit determination ⓘ spacecraft 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: IAU 2000 resolutions Description of subject: The IAU 2000 resolutions are a set of internationally adopted astronomical standards that updated fundamental time scales, reference systems, and models used in celestial mechanics and astrometry.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Terrestrial Time
this entity surface form:
International Astronomical Union resolutions on reference systems