| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| NGC 2245 | January 16, 1784 | William Herschel |
| NGC 2182 | February 24, 1786 | William Herschel |
| IC 2118 | December 20, 1786 | William Herschel |
| NGC 1985 | November 13, 1790 | William Herschel |
| NGC 2064 | January 11, 1864 | Heinrich Louis d'Arrest |
| NGC 1554 | March 14, 1868 | Otto Struve |
| NGC 2067 | 1876 | Wilhelm Tempel |
| NGC 2149 | January 17, 1877 | Édouard Stephan |
| NGC 2282 | March 3, 1886 | Edward Emerson Barnard |
| NGC 2296 | March 11, 1887 | Lewis A. Swift |