Ephemeris is a comprehensive collection of astronomical data that encompasses the positions, coordinates, distances, velocities, and magnitudes of celestial objects such as planets, asteroids, and stars. It serves as a vital tool for astronomers, navigators, and researchers in various fields, enabling them to accurately determine celestial object positions at specific times.
Ephemeris data facilitates the prediction of celestial events like eclipses, the planning of observations, the study of celestial phenomena, and the calculation of occultations. Continuously updated and available in various formats, ephemeris tables incorporate gravitational interactions, relativistic effects, and account for the complex motions within our solar system and beyond. Its versatility extends to specialized ephemerides tailored for satellite tracking, comets, and minor planets, making it an indispensable resource for those exploring the vast realm of astronomy and related disciplines.
You can utilize the physical parameters calculator below to analyze certain objects within the solar system. Simply select an object, choose the physical parameter you would like to display, and input two dates. The available physical parameters include the apparent magnitude of the object, its distance from the Earth expressed in Astronomical Units (1 AU corresponding to the average distance between the Earth and the Sun, approximately 150 million kilometers), its apparent size measured in arcseconds, and its elongation (the angle formed between the object, Earth and the Sun).
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