iers

A Python wrapper for solid Earth tides

C++ functions and definitions implementing the IERS 2010 standards.

IERS data maintained by @astrofrog and astropy.utils.iers maintainers

Fortran codes for nontidal geocentric variation effects of mass on all-element geodetic variations

Fortran codes for spherical harmonic synthesis of ocean tidal load effects on all-element geodetic variations

Fortran codes for computation of Earth’s rotation polar shift effects on all-element geodetic variations

Fortran codes for computation of solid Earth tidal effects on all-element geodetic variations on or outside geoid

Retrieve Earth Orientation Parameters (EOP) from the International Earth Rotation and Reference Systems Service (IERS)

Sun–Moon ephemeris, eclipse prediction and lunar observation in a single HTML file (VSOP2013, ELP/MPP02, IAU 2006/2000A, IERS EOP). Offline-capable, installable PWA.

IERS Conventions made easy.

Fortran codes for spherical harmonic analysis on tidal constants and modelling

Astrodynamics in Rust, organised around independent verification: frames, SGP4, numerical and semi-analytical propagation, orbit determination, GNSS, SLR, coverage. C ABI and Python bindings.

Faithful, memory-safe Rust port of upstream leapseconds.awk — generates the zic 'leapseconds' source from NIST/IERS leap-seconds.list, byte-identical to the awk oracle.

Python toolkit for downloading, parsing, and analyzing IERS C04 Earth Orientation Parameters: Polar motion spectral analysis, Chandler Wobble isolation via FFT, and UT1-UTC time scale conversion.