| Acronym | Meaning |
 | HAINS | High Accuracy Inertial Navigation System |
| MJD | Modified Julian Date |
| ENACEOS | ENAC For EOS |
| ANSI | American National Standards Institute |
| VVS | Voenno-Vosdushniye Sili |
| PDRS | Payload Deployment And Retrieval System |
| RASC | Royal Astronomical Society Of Canada |
| CBR | Cosmic Background Radiation |
| AGE | Auxiliary Ground Equipment |
| LN2 | Liquid Nitrogen |
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