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Geocentric Ephemeris Study

A geocentric ephemeris study generates a table of geocentric (Earth-centered) planetary positions at fixed time intervals over a date range. Its coordinate origin is fixed to geocentric. Like the other study types, it uses the shared configuration, generation, and results surfaces, so once you know one study type you know them all.

A completed Geocentric Ephemeris Study showing generated Earth-centered planetary positions filling the ephemeris table.

Working with a Geocentric Study​

To create and generate a geocentric study:

  1. Create the study from the Ephemerides menu or the toolbar. See Create Study.
  2. Configure its basic settings and date range, then choose the bodies and metrics to include.
  3. Click the Run button to generate the records.
  4. Review the results in the ephemeris table, then export them to CSV if you need them elsewhere.

A geocentric study offers the full catalog of bodies, including the Sun, Moon, and lunar points. For the complete list, see Bodies Selection List.