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Explore a fundamental Julia package designed for astronomical calculations in this 13-minute conference talk from JuliaCon Global 2025. Learn how Astrometry.jl implements essential astrometric algorithms for measuring positions, velocities, and distances of celestial objects including stars, planets, and space probes. Discover how this package simplifies complex astronomical computations by reducing the International Astronomical Union's Standards of Fundamental Astronomy (SOFA) library from 533 functions to just a few dozen user-friendly functions. Understand the package's capabilities for performing barycentric corrections for time, position, and velocity measurements of celestial objects. See how Astrometry.jl serves as a complete drop-in replacement for Julia-wrapped FORTRAN and C SOFA libraries while maintaining fast performance and ease of use. Gain insights into the package's sub-module that implements the complete set of SOFA functions natively in Julia, making positional astronomy calculations more accessible to the Julia programming community.
