| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| NGC 329 | September 27, 1864 | Albert Marth | astronomical radio source |
| NGC 342 | September 27, 1864 | Albert Marth | lenticular galaxy |
| NGC 345 | September 27, 1864 | Albert Marth | spiral galaxy |
| NGC 347 | September 27, 1864 | Albert Marth | spiral galaxy |
| 81 Terpsichore | September 30, 1864 | Wilhelm Tempel | asteroid |
| NGC 1028 | October 1864 | Albert Marth | spiral galaxy |
| NGC 1166 | October 1864 | Albert Marth | spiral galaxy |
| NGC 1168 | October 1864 | Albert Marth | intermediate spiral galaxy |
| NGC 509 | October 1864 | Albert Marth | lenticular galaxy |
| NGC 569 | October 1864 | Albert Marth | spiral galaxy |
| NGC 571 | October 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 1975 | October 3, 1864 | Heinrich Louis d'Arrest | galaxy |
| NGC 1236 | October 5, 1864 | Albert Marth | elliptical galaxy |
| NGC 1474 | October 5, 1864 | Albert Marth | spiral galaxy |
| NGC 1054 | October 8, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 1355 | October 8, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 765 | October 8, 1864 | Albert Marth | spiral galaxy |
| NGC 1449 | October 9, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 1451 | October 9, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 1384 | October 20, 1864 | Albert Marth | spiral galaxy |
| NGC 435 | October 23, 1864 | Albert Marth | intermediate spiral galaxy |
| NGC 479 | October 27, 1864 | Albert Marth | spiral galaxy |
| NGC 631 | October 27, 1864 | Albert Marth | elliptical galaxy |
| NGC 645 | October 27, 1864 | Albert Marth | spiral galaxy |
| NGC 2624 | October 30, 1864 | Albert Marth | spiral galaxy |
| NGC 2625 | October 30, 1864 | Albert Marth | spiral galaxy |
| NGC 2637 | October 30, 1864 | Albert Marth | spiral galaxy |
| NGC 2643 | October 30, 1864 | Albert Marth | unknown astronomical object |
| NGC 2647 | October 30, 1864 | Albert Marth | elliptical galaxy |
| NGC 541 | October 30, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 1645 | October 31, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 535 | October 31, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 543 | October 31, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 469 | November 3, 1864 | Albert Marth | low-surface-brightness galaxy |
| NGC 471 | November 3, 1864 | Albert Marth | lenticular galaxy |
| NGC 475 | November 3, 1864 | Albert Marth | brightest cluster galaxy |
| NGC 476 | November 3, 1864 | Albert Marth | lenticular galaxy |
| NGC 1104 | November 6, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 2405 | November 7, 1864 | Albert Marth | galaxy |
| NGC 2486 | November 7, 1864 | Albert Marth | spiral galaxy |
| NGC 2487 | November 7, 1864 | Albert Marth | spiral galaxy |
| NGC 2341 | November 10, 1864 | Albert Marth | spiral galaxy |
| NGC 2962 | December 10, 1864 | Albert Marth | lenticular galaxy |
| NGC 518 | December 17, 1864 | Albert Marth | spiral galaxy |
| NGC 1026 | December 24, 1864 | Albert Marth | lenticular galaxy |
| NGC 116 | 1865 | Gaspare Stanislao Ferrari | lenticular galaxy |
| NGC 1381 | 1865 | Johann Friedrich Julius Schmidt | lenticular galaxy |
| NGC 1382 | 1865 | Johann Friedrich Julius Schmidt | lenticular galaxy |
| NGC 2278 | 1865 | Heinrich Louis d'Arrest | galaxy |
| NGC 2468 | 1865 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 1007 | January 15, 1865 | Albert Marth | lenticular galaxy |
| NGC 1021 | January 15, 1865 | Albert Marth | intermediate spiral galaxy |
| NGC 1396 | January 19, 1865 | Johann Friedrich Julius Schmidt | lenticular galaxy |
| NGC 3039 | January 22, 1865 | Albert Marth | spiral galaxy |
| NGC 3083 | January 22, 1865 | Albert Marth | spiral galaxy |
| NGC 3086 | January 22, 1865 | Albert Marth | spiral galaxy |
| NGC 3101 | January 22, 1865 | Albert Marth | spiral galaxy |
| NGC 2416 | January 26, 1865 | Albert Marth | spiral galaxy |
| NGC 2522 | January 26, 1865 | Albert Marth | lenticular galaxy |
| NGC 2596 | January 26, 1865 | Albert Marth | radio galaxy |