Added support for Intelsat's 11 elements propagation.
Fixes #1299 (closed)
For review :
- I agree that Orekit shall be in S.I units. But I consider this case very specific. Units of Intelsat's 11 elements are always ° and days in the provided files. In addition, the propagation model uses ° and days. Therefore, handling S.I units in Orekit will cause unwanted conversions for users.
Edited by Bryan Cazabonne