The primary objectives of the IERS are to serve the astronomical, geodetic and geophysical communities by providing access to international terrestrial and celestial reference systems.

• 国际地球自转及参照系服务（IERS）的主要目标是通过提供国际陆空参考系统的入口来为天文学、测地学和地球物理学的研究团体服务。