| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| NGC 3567-1 | April 24, 1784 | William Herschel | galaxy |
| NGC 680 | September 1784 | William Herschel | elliptical galaxy |
| NGC 1012 | September 11, 1784 | William Herschel | spiral galaxy |
| NGC 108 | September 11, 1784 | William Herschel | lenticular galaxy |
| NGC 315 | September 11, 1784 | William Herschel | elliptical galaxy |
| NGC 1240 | September 12, 1784 | William Herschel | binary star |
| NGC 296 | September 12, 1784 | William Herschel | low-surface-brightness galaxy |
| NGC 379 | September 12, 1784 | William Herschel | lenticular galaxy |
| NGC 380 | September 12, 1784 | William Herschel | elliptical galaxy |
| NGC 420 | September 12, 1784 | William Herschel | lenticular galaxy |
| NGC 495 | September 12, 1784 | William Herschel | spiral galaxy |
| NGC 496 | September 12, 1784 | William Herschel | spiral galaxy |
| NGC 499 | September 12, 1784 | William Herschel | lenticular galaxy |
| NGC 507 | September 12, 1784 | William Herschel | brightest cluster galaxy |
| NGC 508 | September 12, 1784 | William Herschel | elliptical galaxy |
| NGC 736 | September 12, 1784 | William Herschel | elliptical galaxy |
| NGC 750 | September 12, 1784 | William Herschel | elliptical galaxy |
| NGC 777 | September 12, 1784 | William Herschel | elliptical galaxy |
| NGC 987 | September 12, 1784 | William Herschel | lenticular galaxy |
| NGC 1167 | September 13, 1784 | William Herschel | lenticular galaxy |
| NGC 515 | September 13, 1784 | William Herschel | lenticular galaxy |
| NGC 523 | September 13, 1784 | William Herschel | spiral galaxy |
| NGC 553 | September 13, 1784 | William Herschel | lenticular galaxy |
| NGC 614 | September 13, 1784 | William Herschel | lenticular galaxy |
| NGC 735 | September 13, 1784 | William Herschel | radio galaxy |
| NGC 890 | September 13, 1784 | William Herschel | lenticular galaxy |
| NGC 1253A | September 20, 1784 | William Herschel | spiral galaxy |
| NGC 1287 | September 20, 1784 | William Herschel | spiral galaxy |
| NGC 702 | September 20, 1784 | William Herschel | spiral galaxy |
| NGC 748 | September 20, 1784 | William Herschel | spiral galaxy |
| NGC 958 | September 20, 1784 | William Herschel | spiral galaxy |
| NGC 393 | October 5, 1784 | William Herschel | lenticular galaxy |
| NGC 1160 | October 7, 1784 | William Herschel | spiral galaxy |
| NGC 871 | October 14, 1784 | William Herschel | spiral galaxy |
| NGC 794 | October 15, 1784 | William Herschel | lenticular galaxy |
| NGC 1134 | October 16, 1784 | William Herschel | spiral galaxy |
| NGC 781 | October 16, 1784 | William Herschel | spiral galaxy |
| NGC 2124 | October 20, 1784 | William Herschel | spiral galaxy |
| NGC 907 | October 20, 1784 | William Herschel | spiral galaxy |
| NGC 1044 | November 7, 1784 | William Herschel | lenticular galaxy |
| NGC 1046 | November 7, 1784 | William Herschel | lenticular galaxy |
| NGC 827 | November 7, 1784 | William Herschel | spiral galaxy |
| NGC 2129 | November 16, 1784 | William Herschel | open cluster |
| NGC 2577 | November 16, 1784 | William Herschel | lenticular galaxy |
| NGC 2599 | November 16, 1784 | William Herschel | spiral galaxy |
| NGC 2628 | November 16, 1784 | William Herschel | spiral galaxy |
| NGC 2764 | November 16, 1784 | William Herschel | lenticular galaxy |
| NGC 1979 | November 20, 1784 | William Herschel | lenticular galaxy |
| NGC 2073 | November 20, 1784 | William Herschel | lenticular galaxy |
| NGC 2815 | November 20, 1784 | William Herschel | spiral galaxy |
| NGC 2026 | December 5, 1784 | William Herschel | open cluster |
| NGC 1401 | December 9, 1784 | William Herschel | lenticular galaxy |
| NGC 216 | December 9, 1784 | William Herschel | lenticular galaxy |
| NGC 2467 | December 9, 1784 | William Herschel | H II region |
| NGC 1070 | December 13, 1784 | William Herschel | spiral galaxy |
| NGC 1153 | December 13, 1784 | William Herschel | lenticular galaxy |
| NGC 3044 | December 13, 1784 | William Herschel | spiral galaxy |
| NGC 718 | December 13, 1784 | William Herschel | intermediate spiral galaxy |
| NGC 741 | December 13, 1784 | William Herschel | elliptical galaxy |
| NGC 742 | December 13, 1784 | William Herschel | lenticular galaxy |