| Acronym | Meaning |
| SEP | Societe Europeenne De Propulsion |
| ADS | Astrophysical Data System (at Havard-Smithsonian CfA) |
| HDE | Henry Draper Extension |
| GOMR | Global Ozone Monitoring Radiometer |
| STARCAL | Star Calibration |
| HRPT | High Resolution Picture Transmission |
| RCT | Radiometric Calibration Target |
| PEM | Particle Environment Monitor |
| DRSS | DATA Relay Satellite System |
| RMCD | Radaiation Monitoring Container Device |