ephemeridesavailable

Ephemerides/available refers to a collection of astronomical data that is published in various formats, often including physical publications, ephemeris tables, and digital software. These tables provide essential information about celestial bodies, including their positions, orbits, and other relevant parameters.

Historically, ephemerides were primarily used by astronomers to track the motion of planets, stars, and other celestial objects. With the advent of computers, ephemerides have become more complex and extensive, incorporating additional parameters such as tidal information, lunar and solar eclipses, and asteroid and comet orbital data.

Today, ephemerides are available in a variety of digital formats, including software applications, online databases, and mobile apps. Some popular ephemeride databases include the United States Naval Observatory's (USNO) Data Services, the Jet Propulsion Laboratory's (JPL) Horizons Ephemeris System, and the International Astronomical Union's (IAU) Minor Planet Center's Ephemeris Service.

Many ephemerides are available for public access, while others may require subscription or licensing. The widespread availability of ephemerides has significantly facilitated research and educational activities in astronomy and related fields. By providing accurate and up-to-date astronomical data, ephemerides have played a crucial role in advancing our understanding of the solar system and beyond.

The term ephemerides can also imply a yearly calendar of events, which is often available online. This type of ephemeris provides a yearly overview of astronomical events, including eclipses, planetary alignments, and planetary positions.