| Acronym | Meaning |
| MDM | Michigan Dartmouth MIT Telescope Consortium |
| ISAF | International Sailing Federation - International Security Assistance Force |
| INMARSAT | International Maritime Satellite Organization |
| LAO | Laos (ISO 3166 Trigram) |
| FAI | F?d?ration A?ronautique Internationale (French |
| SDO | Scattered Disc Object |
| SPS | Standard Positioning Service (GPS) |
| VUT | Vanuatu (ISO 3166 Trigram) |
| WMO | World Meteorological Organization |
| AVUM | Aviation Unit Maintenanc |