| Acronym | Meaning |
 | NSSDC | National Space Science Data Center |
| UVS | Ultraviolet Spectrometer |
| VAFB | Vandenberg Air Force Base |
| GHA | Greenwich Hour Angle |
| ERS | Environmental Research Satellite |
| ICE | International Cometary Explorer |
| ATAL | Alternate Transoceanic Abort Landing |
| NACA | National Advisory Committee On Aeronautics |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
| HR | Hertzsprung-Russell |
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