Word origin · etymology
Eponym.
Moshier is the surname of numerical-software author Stephen L. Moshier. The label distinguishes his calculation implementation within the ephemeris options.
How we know · epistemology
Analytical astronomical model
This fallback supplies positions through an analytical model. It may keep a calculation available when files are missing, but its use must be disclosed instead of reporting file-based ephemeris precision.
Connected concepts
Terms used in this explanation
These links connect subjects and terminology. They do not establish a shared historical origin.
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.