Ephemeris Official

Times of solar/lunar eclipses, planetary ingresses (moving into a new sign), and retrograde motion.

Brightness (magnitude), distance from the Sun or Earth, velocity, and apparent diameter. Ephemeris

Missions like Hayabusa2 rely on updated ephemerides of asteroids to achieve high-precision landings (within 100 metres). Times of solar/lunar eclipses

Calculations have evolved from using Earth’s variable rotation (Universal Time) to highly uniform scales like Ephemeris Time (ET) and its successors, Terrestrial Time (TT) and Barycentric Dynamical Time (TDB), which incorporate relativistic corrections. Leading Sources and Software and retrograde motion. Brightness (magnitude)

Astrologers use these tables to track planetary "transits" (the movement of planets through zodiac signs) and generate birth charts. Scientific and Technical Data