| AB2 | Aerobraking Phase II |
| ABX | Final Aerobraking Maneuver |
| CSA BU Mode used with STAREX enabled | Celestial Sensor Assembly Backup Mode used with star tracking enabled |
| DNS | Deep Space Network |
| DNS Passes Per Day | Number of times per day that the Deep Space Network makes contact with the spacecraft |
| FIXED HGA | High Gain Antenna in Fixed Position |
| FF CAL | Focusing Calibration of MOC Camera |
| Frozen Mapping Orbit | Inclination and Argument of Periapsis of Sun Synchronous Orbit is Constant |
| Gravity Cal | Gravity Calibration |
| HGA | High Gain Antenna |
| HGA Deploy | Deployment of High Gain Antenna |
| MAG | MGS Magnetometer |
| Mapping Cals | Mapping Calibration |
| Mapping Phase | Mapping the Surface of Mars |
| Mapping Cals | Mapping Calibration |
| MOC | Mars Orbiter Camera |
| MOC Absolute & Focus Cals | Calibration of MOC camera by pointing at a fixed object and focusing. |
| MOC Scattered Light & Focus Cals | Pointing MOC Camera indirectly at a light source and focusing using the scattered light entering the camera |
| Sequence Boundaries | Boundaries between sequences that control the spacecraft |
| TES | MGS Thermal Emission Spectrometer Project ( ASU ) |
| TMO | Transition to Mapping Orbit |