| Acronym | Meaning |
| CNES | Centre National D'Etude Spatiales |
| ACF | Automated Control Function |
| TOS | Transfer Orbit Stage |
| NGC | New General Catalog |
| ESTEC | European Space Research And Technology Centre |
| AGU | American Geophysical Union |
| ASS | Antenna Support Structure |
| FOS | Faint Object Spectrograph |
| ESPC | European Space Power Conference |
| SSI | Solid-State Imager / Space Studies Institut |