| Acronym | Meaning |
 | DOR | Differenced One-way Range |
| ESIS | European Space Information System |
| ADS | Aitken Double Star Catalog |
| ENSO | El Nino/Southern Oscillation |
| EUMETSAT | European Meterological Satellite Organisation |
| SOCC | Satellite Operations Control Center |
| RASC | Royal Astronomical Society Of Canada |
| PLB | Payload Bay |
| HD | Henry Draper Catalog Entry |
| STS | Shuttle Transport System / Space Transportation System |
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