| Acronym | Meaning |
 | PACC | Problem Action Control Center |
| CIDR | Critical Intermediate Design Review |
| ISPM | International Solar Polar Mission |
| NOCC | Network Operations Control Center (GSFC) |
| EIS | Electrical Integration SYstem |
| MHSC | Manipulator Handset Controller |
| ITA | Integrated Test Article |
| MTC | Mission And Traffic Control |
| TTP | Time To Perigee |
| OA | Office Of Applications (now OSTA) |
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