| Invention or discovery | Date | Inventor or discoverer |
|---|---|---|
| Arp 87 | April 10, 1785 | William Herschel |
| NGC 3104 | March 18, 1787 | William Herschel |
| NGC 3263 | February 3, 1835 | John Frederick William Herschel |
| NGC 4016 | March 30, 1854 | William Parsons, 3rd Earl of Rosse |
| NGC 935 and IC 1801 | September 18, 1885 | Lewis A. Swift |
| NGC 1128 | October 8, 1886 | Lewis A. Swift |