| shortcut | meaning |
|---|---|
| Alt | Altitude |
| GEO | GEostationary Orbit |
| GSO | GeoSynchronous Orbit |
| LEO | Low Earth Orbit |
| MEO | Medium Earth Orbit |
| HEO | High Earth Orbit |
| GTO | Geostationary Transfer Orbit |
| <First letter of a bodyname>OI | <Body> Orbit Insertion |
| T<First letter of a bodyname>I | Trans-(celestial body adjective) injection |
| Ecc | ECCentricity |
| LAN | Longitude of Ascending Node |
| LPe | Longitude of PEriapsis |
| I / Inc | Inclination / INClination |
| SMA | Semi-Major-Axis |
| SMI | Semi-MInor-axis |
| shortcut | meaning |
|---|---|
| HST | Hubble Space Telescope |
| JWST | James Webb Space Telescope |
| PSP | Parker Solar Probe |
| STEREO (A/B) | Solar TErrestrial RElations Observatory (Ahead/Behind) |
| ISS | International Space Station |
| WMAP | Wilkinson Microwave Anisotropy Probe |
| L(1/2/3/4/5) (Point) | Lagrange (1/2/3/4/5) (Point) |
| GPS | Global Positioning System |
| RTG(s) | Radiosotope Thermoelectric Generator(s) |
| Themis
ARTEMIS (P1/P2) |
Time History of Events and Macroscale Interactions during Substorms
Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (Probe 1/Probe 2) |
| MER(s) | Mars Exploration Rover(s) |