AstriaGraph is a public-private partnership in which the partners have agreed to limit commercial
uses by third parties. You can copy, modify, distribute, or display AstriaGraph information for non-commercial uses without
permission. For any other permissible uses, contact those listed as the source of the information
The ephemeris OEM files are generated by fitting a subset of USSPACECOM's Special Perturbation (SP) ephemerides.
We use our open-source orbdetpy library, which is based on Orekit. The library is available
Data obtained from the sources listed above are stored internally as EME2000 state vectors. Orbits are visualized using
the equations of Keplerian motion. Perturbations from Earth oblateness, third bodies, atmospheric drag, solar radiation
pressure etc., are not taken into account in order to reduce CPU cost.