|JEphem Presentation Ephemeris SkyMap Curve Date search Informatic Library Download Glossary About|
|JEphem Ephemeris trail|
Here, the purpose is to present the astronomical notions used by JEphem, and how they were included in the program.
The building process of the program is described.
BuildVSOP87, has been written to build data classes and files from BDL original files.