| * | Star or Point Source |
| ** | Double star |
| *Ass | Stellar association |
| *Cl | Star cluster |
| AbLS | Absorption line system |
| Blue* | Blue star |
| C* | Carbon star |
| EmLS | Emission line source |
| EmObj | Emission object |
| exG* | Extragalactic star (not a member of an identified galaxy) |
| Flare* | Flare star |
| G | Galaxy |
| GammaS | Gamma ray source |
| GClstr | Cluster of galaxies |
| GGroup | Group of galaxies |
| GPair | Galaxy pair |
| GTrpl | Galaxy triple |
| G_Lens | Lensed image of a galaxy |
| HII | HII region |
| IrS | Infrared source |
| MCld | Molecular cloud |
| Neb | Nebula |
| Nova | Nova |
| Other | Other classification (e.g. comet; plate defect) |
| PN | Planetary nebula |
| PofG | Part of galaxy |
| Psr | Pulsar |
| QGroup | Group of QSOs |
| QSO | Quasi-stellar object |
| Q_Lens | Lensed image of a QSO |
| RadioS | Radio source |
| Red* | Red star |
| RfN | Reflection nebula |
| SN | Supernova |
| SNR | Supernova remnant |
| UvES | Ultraviolet excess source |
| UvS | Ultraviolet source |
| V* | Variable star |
| VisS | Visual source |
| WD* | White dwarf |
| WR* | Wolf-Rayet star |
| XrayS | X-ray source |
| !* | Galactic star |
| !** | Galactic double star |
| !*Ass | Galactic star association |
| !*Cl | Galactic Star cluster |
| !Blue* | Galactic blue star |
| !C* | Galactic carbon star |
| !EmObj | Galactic emission line object |
| !Flar* | Galactic flare star |
| !HII | Galactic HII region |
| !MCld | Galactic molecular cloud |
| !Neb | Galactic nebula |
| !Nova | Galactic nova |
| !PN | Galactic planetary nebula |
| !Psr | Galactic pulsar |
| !RfN | Galactic reflection nebula |
| !Red* | Galactic red star |
| !SN | Galactic supernova |
| !SNR | Galactic supernova remnant |
| !V* | Galactic variable star |
| !WD* | Galactic white dwarf |
| !WR* | Galactic Wolf-Rayet star |