| Acronym | Meaning |
 | MTC | Man Tended Capability |
| UVS | Ultraviolet Spectrometer |
| BATSE | Burst And Transient Source Experiment |
| DSP | Defense Support Program |
| E | Elliptical (for Galaxies) |
| RCS | Reaction Control System / Revision Control System |
| ATCS | Active Thermal Control System |
| NLDP | National Launch Development Program |
| ET | Ephemeris Time |
| NRL | Naval Research Laboratory |
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