| Acronym | Meaning |
 | DOD | Department Of Defense |
| APT | Automatic Photoelectric Telescope |
| OCGF | Organic Crystal Growth Facility |
| LGM | Little Green Men |
| RPM | Retro Propulsion Module |
| NOAA | National Oceanic And Atmospheric Administration |
| HRDI | High Resolution Doppler Imager |
| ASE | Advanced Space Engine |
| FGS | Fine Guidance Sensors |
| IAPPP | International Amateur/Professional Photoelectric Photometry |
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