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(JJKP) Refactor the EphemerisFile and EphemerisPropagator subsystems to allow easy addition of new types (e.g. via a plugin). Similar to the work being done to parameters above.
SolarSystem (JJKP)
(JJKP) Update and clean up default SolarSystem values. Scrub for hard-coded values & replace with files/inputs where possible.
Existing High Value Quality Tickets
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