| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| NGC 3651-1 | April 21, 1785 | William Herschel |
| NGC 4428-1 | March 16, 1828 | John Frederick William Herschel |
| NGC 2216 | January 23, 1835 | John Frederick William Herschel |
| NGC 3991 | February 5, 1864 | Heinrich Louis d'Arrest |
| NGC 1327 | 1886 | Ormond Stone |
| NGC 858 | 1886 | Francis Preserved Leavenworth |
| NGC 2881 | February 21, 1886 | Lewis A. Swift |
| NGC 1034 | November 12, 1886 | Francis Preserved Leavenworth |