An ephemeris provides more than just a location in the sky. Scientific versions often include:
Modern GNSS signals transmit "broadcast ephemeris" data. This contains precise orbital parameters that your phone or car's GPS receiver uses to calculate the satellite’s exact position, allowing it to determine your location on Earth.
While printed almanacs are still produced for emergency use, most professionals use electronic datasets: Ephemeris - an overview | ScienceDirect Topics Ephemeris
Astrologers use these tables to track planetary "transits" (the movement of planets through zodiac signs) and generate birth charts. Scientific and Technical Data
Missions like Hayabusa2 rely on updated ephemerides of asteroids to achieve high-precision landings (within 100 metres). An ephemeris provides more than just a location in the sky
Times of solar/lunar eclipses, planetary ingresses (moving into a new sign), and retrograde motion.
Usually given in spherical polar systems (Right Ascension and Declination). While printed almanacs are still produced for emergency
An (plural: ephemerides ) is a tabulation of the computed positions and velocities of celestial bodies—such as planets, moons, asteroids, and satellites—at specific dates and times. Derived from the Greek word for "diary," it serves as an itinerary for astronomical objects, providing essential data for navigation, scientific research, and astrology. Core Applications