| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| Gortyn code | Federico Halbherr | inscription |
| NGC 3321 | Francis Preserved Leavenworth | intermediate spiral galaxy |
| NGC 3722 | Francis Preserved Leavenworth | elliptical galaxy |
| Stele of the Vultures | Ernest de Sarzec | stele |
| NGC 1694 | Édouard Stephan | spiral galaxy |
| NGC 2119 | Édouard Stephan | elliptical galaxy |
| NGC 1227 | Édouard Stephan | lenticular galaxy |
| NGC 2876 | Édouard Stephan | lenticular galaxy |
| NGC 3035 | Édouard Stephan | spiral galaxy |
| NGC 3018 | Édouard Stephan | spiral galaxy |
| NGC 3154 | Édouard Stephan | radio galaxy |
| NGC 122 | Wilhelm Tempel | unknown astronomical object |
| NGC 123 | Wilhelm Tempel | unknown astronomical object |
| NGC 961 | Édouard Stephan | low-surface-brightness galaxy |
| NGC 1149 | Édouard Stephan | lenticular galaxy |
| NGC 1171 | Édouard Stephan | spiral galaxy |
| NGC 668 | Édouard Stephan | spiral galaxy |