| Acronym | Meaning |
| MPC | Minor Planets Circular |
| IRAS | InfraRed Astronomical Satellite |
| ESRO | European Space Research Organisation |
| VECO | Vernier Engine Cutoff |
| SEP | Societe Europeenne De Propulsion |
| NICMOS | Near Infrared Camera/Multi Object Spectrometer |
| TSUP | Tsentr Upravileniya Polyoti |
| NBS | National Bureau Of Standards |
| GR | General Relativity |
| AGB | Asymptotic Giant Branch |