| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| NGC 3825 | March 15, 1784 | William Herschel |
| NGC 3099A | December 7, 1785 | William Herschel |
| NGC 1217-1 | October 23, 1835 | John Frederick William Herschel |
| NGC 707 | November 25, 1879 | Wilhelm Tempel |
| NGC 1072 | December 20, 1881 | Édouard Stephan |