International Earth Rotation and Reference Systems Service (IERS)

Highlights

• ›Keeper of the reference frames, Earth orientation, and leap seconds

Related systems & concepts

• The International Celestial Reference Frame (ICRF3)
• Earth Orientation Parameters
• The Leap Second
• Universal Time (UT1)

Across the reference systems

• The International Celestial Reference Frame (ICRF3)
• Earth Orientation Parameters
• International Astronomical Union (IAU)

Knowledge connections

• Associated withThe International Celestial Reference Frame (ICRF3)
• Associated withEarth Orientation Parameters
• Associated withInternational Astronomical Union (IAU)
• Associated withThe International Celestial Reference Frame (ICRF3)
• Associated withEarth Orientation Parameters
• Associated withThe Leap Second
• Associated withUniversal Time (UT1)

Sources

Facts on this topic will be cited from these primary and reference sources.

• IAUInternational Astronomical Union

  Official naming, definitions, constellation boundaries, and astronomical nomenclature.