For general inquiries about the IERS, please contact the Central Bureau at central_bureau@iers.org . For postal addresses and phone numbers, as well as email addresses for the various IERS components, please refer to the links below.

Directing Board

Central Bureau

Analysis Coordinator

Technique Centres

• International DORIS Service (IDS)
• International GNSS Service (IGS)
• International Laser Ranging Service (ILRS)
• International VLBI Service (IVS)

Product Centres

• Earth Orientation Centre
• Rapid Service/Prediction Center
• Conventions Centre
• ICRS Centre
• ITRS Centre

• Global Geophysical Fluids Centre

  • Special Bureau for the Oceans
  • Special Bureau for Hydrology
  • Special Bureau for the Atmosphere
  • Special Bureau for Combination

ITRS Combination Centres

• Deutsches Geodätisches Forschungsinstitut (DGFI-TUM)
• Institut Géographique National (IGN)
• Jet Propulsion Laboratory (JPL)

Working Groups

• IAG/IERS Working Group "Metrology of space geodetic infrastructure"
• IERS Working Group on SINEX Format
• IAG/IAU/IERS Joint Working Group on the Consistent Realization of TRF, CRF, and EOP
• IERS/IAG/IAU Working Group on the Prediction of Earth Orientation Parameters
• IAG/IERS Joint Working Group on GENESIS
• IAG/IERS Joint Working Group "Evaluation of the Terrestrial Reference Frames"

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