| Acronym | Meaning |
| BFC | Backup Flight Computer |
| MPC | Minor Planets Circular |
| SCT | Schmidt-Cassegrain Telescope |
| SLAP | Space Link Access Protocol |
| ACRV | Assured Crew Return Vehicle |
| COSTAR | Corrective Optics Space Telescope Axial Replacement |
| KPNO | Kitt Peak National Observatory |
| IOTA | Infrared-Optical Telescope Array |
| ESRO | European Space Research Organisation |
| CM | Center Of Mass |