The Earth Orientation Center provides Earth orientation time series, reference series, bulletins, and related analysis resources.
International Earth Rotation and Reference Systems Service
IERS provides data on Earth rotation, reference systems, and geophysical fluids, with models, standards, and current bulletins.
About International Earth Rotation and Reference Systems Service
The International Earth Rotation and Reference Systems Service provides data on Earth orientation, the International Celestial Reference System/Frame, the International Terrestrial Reference System/Frame, and geophysical fluids. It also maintains Conventions containing models, constants and standards.
It distributes Earth orientation data through Bulletins, including rapid data and predictions and monthly data, alongside Messages, Technical Notes and Annual Reports. Its science background section is currently being revised and temporarily unavailable.
Key features
- Rapid Earth orientation predictions via Bulletin A
- Monthly Earth orientation data via Bulletin B
- Data on International Celestial Reference System and Frame
- Data on International Terrestrial Reference System and Frame
- Geophysical fluids data
- Conventions with models, constants and standards
Best for: People working in navigation, geodesy, astronomy, and related research who need Earth rotation and reference-system data.
Good for
- Provides Earth orientation, celestial frame, terrestrial frame, and geophysical fluids data in one place
- Publishes both rapid predictions and monthly Earth orientation bulletins
- Maintains shared models, constants and standards through IERS Conventions
Watch out for
- Science background information is temporarily unavailable while under revision
International Earth Rotation and Reference Systems Service at a glance
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
International Earth Rotation and Reference Systems Service alternatives
Tools and sites you could use instead, ranked by how closely they match.
NASA’s Solar Dynamics Observatory provides solar imagery and data from instruments studying the Sun’s atmosphere.
Browse Community Earth System Model experiments and their resulting output data.
Italy’s National Oceanographic Data Centre is the national reference for the UNESCO oceanographic data exchange system.
The NEA Thermochemical Database project develops reference thermodynamic values for compounds relevant to radioactive waste safety and geochemical modeling.
The Earth System Grid Federation is an open-source distributed data and computation platform for worldwide scientific collaboration.
Popular in Open Data & Datasets
Well-known listings from the same topic.
data.worlddata.worldNASA APIapi.nasa.govCosmoSimcosmosim.orgState of Hawaiidata.hawaii.govdata.meudon.frdata.meudon.frESS-DIVEess-dive.lbl.gov
International Earth Rotation and Reference Systems Service FAQ
What is the difference between Bulletin A and Bulletin B?
Bulletin A provides rapid Earth orientation data and predictions, while Bulletin B provides monthly Earth orientation data.
What publications does IERS issue?
Messages to distribute news, Bulletins to provide Earth orientation data, Technical Notes to publish research results and workshop proceedings, and Annual Reports about its work.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.