IERS Data for Astropy

astropy-iers-data is a data package that provides International Earth Rotation and Reference Systems Service (IERS) tables, including Earth Rotation Parameters (ERP) and leap second data. It is specifically designed to be consumed by the `astropy` core library, allowing `astropy.time` and `astropy.coordinates` to perform accurate time and coordinate transformations without needing to download IERS data from external sources at runtime. The current version is 0.2026.4.6.0.54.57, and its releases are typically tied to updates in the IERS data itself.