| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| NGC 1243 | January 6, 1831 | John Frederick William Herschel |
| NGC 1059 | January 25, 1832 | John Frederick William Herschel |
| NGC 405 | September 6, 1834 | John Frederick William Herschel |
| NGC 1995 | December 28, 1834 | John Frederick William Herschel |
| NGC 607 | August 23, 1855 | Heinrich Louis d'Arrest |
| NGC 1251 | January 25, 1860 | United States |
| NGC 2703 | 1877 | Wilhelm Tempel |
| NGC 156 | 1882 | Wilhelm Tempel |
| NGC 158 | 1882 | Wilhelm Tempel |