| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| NGC 2067 | Wilhelm Tempel | reflection nebula |
| NGC 2386 | Lawrence Parsons, 4th Earl of Rosse | galaxy |
| NGC 3580 | Wilhelm Tempel | lenticular galaxy |
| NGC 926 | Wilhelm Tempel | spiral galaxy |
| NGC 934 | Wilhelm Tempel | lenticular galaxy |
| Telephone | Antonio Meucci | type of physical object |
| The Ancient Roman Mosaic of Lierna on Lake Como | Siro Panizza | archaeological find |
| 163 Erigone | Henri Joseph Anastase Perrotin | asteroid |
| NGC 575 | Édouard Stephan | spiral galaxy |
| NGC 785 | Édouard Stephan | lenticular galaxy |
| NGC 511 | Édouard Stephan | elliptical galaxy |
| NGC 1006 | Édouard Stephan | spiral galaxy |
| NGC 1095 | Édouard Stephan | spiral galaxy |
| NGC 373 | John Louis Emil Dreyer | elliptical galaxy |
| NGC 1155 | Édouard Stephan | lenticular galaxy |
| NGC 1346 | Édouard Stephan | spiral galaxy |
| NGC 1508 | Édouard Stephan | lenticular galaxy |
| NGC 1691 | Édouard Stephan | lenticular galaxy |