| Acronym | Meaning |
 | CADH | Communications And Data Handling |
| MSFC | Marshall Space Flight Center |
| HD | Henry Draper Catalog Entry |
| ISZ | Iskusstvenniy Sputnik Zemli |
| EROS | Earth Resources Observations System |
| TOMS | Total Ozone Mapping Spectrometer |
| CDM | Cold Dark Matter |
| PPM | Positions And Proper Motions (catalog) |
| EGRET | Energetic Gamma Ray Experiment Telescope |
| OMB | Office Of Management And Budget |
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