| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| NGC 1933 | November 2, 1834 | John Frederick William Herschel |
| NGC 971 | September 14, 1850 | William Parsons, 3rd Earl of Rosse |
| NGC 733 | October 11, 1850 | William Parsons, 3rd Earl of Rosse |
| NGC 2461 | February 20, 1851 | William Parsons, 3rd Earl of Rosse |
| NGC 2465 | February 20, 1851 | William Parsons, 3rd Earl of Rosse |
| NGC 1988 | October 19, 1855 | France |
| NGC 162 | September 5, 1862 | Herman Schultz |
| NGC 4170 | May 22, 1864 | Heinrich Louis d'Arrest |
| NGC 4171 | May 22, 1864 | Heinrich Louis d'Arrest |
| NGC 2702 | 1877 | Wilhelm Tempel |
| NGC 2705 | 1877 | Wilhelm Tempel |
| NGC 2707 | 1877 | Wilhelm Tempel |
| NGC 1443 | 1882 | Wilhelm Tempel |
| NGC 4322 | 1882 | Wilhelm Tempel |
| NGC 1178 | December 17, 1884 | Guillaume Bigourdan |