| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| NGC 861 | September 18, 1865 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 656 | September 20, 1865 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 590 | September 22, 1865 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 829 | September 23, 1865 | Heinrich Louis d'Arrest | radio galaxy |
| NGC 830 | September 23, 1865 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 786 | September 26, 1865 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 867 | September 26, 1865 | William Herschel | lenticular galaxy |
| NGC 940 | September 26, 1865 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 953 | September 26, 1865 | Heinrich Louis d'Arrest | elliptical galaxy |
| NGC 1050 | September 27, 1865 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 1285 | October 28, 1865 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 1303 | October 28, 1865 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 1420 | October 28, 1865 | Heinrich Louis d'Arrest | star system |
| NGC 4148 | February 7, 1866 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 2794 | March 15, 1866 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 2797 | March 15, 1866 | Heinrich Louis d'Arrest | intermediate spiral galaxy |
| NGC 3719 | March 15, 1866 | Heinrich Louis d'Arrest | radio galaxy |
| NGC 3720 | March 15, 1866 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 3716 | April 6, 1866 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 3558 | April 15, 1866 | Heinrich Louis d'Arrest | elliptical galaxy |
| 87 Sylvia | May 16, 1866 | N. R. Pogson | asteroid |
| NGC 2591 | August 12, 1866 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 3759 | August 19, 1866 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 3809 | August 20, 1866 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 4510 | September 9, 1866 | Heinrich Louis d'Arrest | elliptical galaxy |
| NGC 3538 | September 15, 1866 | Heinrich Louis d'Arrest | galaxy |
| NGC 4481 | October 7, 1866 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 591 | October 10, 1866 | Lewis A. Swift | lenticular galaxy |
| NGC 778 | November 5, 1866 | Édouard Stephan | lenticular galaxy |
| NGC 769 | November 9, 1866 | Édouard Stephan | spiral galaxy |
| NGC 2410 | February 5, 1867 | Édouard Stephan | spiral galaxy |
| NGC 414 | October 22, 1867 | Herman Schultz | lenticular galaxy |
| NGC 1211 | October 31, 1867 | Édouard Stephan | lenticular galaxy |
| NGC 548 | November 2, 1867 | George Mary Searle | elliptical galaxy |
| NGC 565 | November 2, 1867 | George Mary Searle | spiral galaxy |
| NGC 4247 | February 25, 1868 | George Mary Searle | radio galaxy |
| NGC 1554 | March 14, 1868 | Otto Struve | reflection nebula |
| NGC 4058 | March 24, 1868 | George Mary Searle | lenticular galaxy |
| 107 Camilla | November 17, 1868 | N. R. Pogson | asteroid |
| NGC 3612 | March 16, 1869 | Otto Wilhelm von Struve | spiral galaxy |
| NGC 3739 | March 16, 1869 | Otto Wilhelm von Struve | spiral galaxy |
| NGC 2268 | 1871 | Alphonse Borrelly | galaxy |
| NGC 2715 | 1871 | Alphonse Borrelly | intermediate spiral galaxy |
| NGC 3933 | 1871 | Alphonse Borrelly | spiral galaxy |
| NGC 3934 | 1871 | Alphonse Borrelly | spiral galaxy |
| Rosette Nebula | 1871 | Lewis A. Swift | H II region |
| NGC 816 | September 15, 1871 | Édouard Stephan | spiral galaxy |
| NGC 860 | September 18, 1871 | Édouard Stephan | elliptical galaxy |
| NGC 783 | September 22, 1871 | Édouard Stephan | spiral galaxy |
| NGC 826-1 | September 30, 1871 | Édouard Stephan | spiral galaxy |
| NGC 995 | December 8, 1871 | Édouard Stephan | lenticular galaxy |
| NGC 1040-1 | December 9, 1871 | Édouard Stephan | lenticular galaxy |
| NGC 1233 | December 10, 1871 | Lewis A. Swift | spiral galaxy |
| NGC 798 | December 10, 1871 | Édouard Stephan | elliptical galaxy |
| NGC 810 | December 11, 1871 | Édouard Stephan | elliptical galaxy |
| NGC 962 | December 13, 1871 | Édouard Stephan | elliptical galaxy |
| NGC 983 | December 13, 1871 | Édouard Stephan | spiral galaxy |
| NGC 984 | December 13, 1871 | Édouard Stephan | lenticular galaxy |
| NGC 620 | December 14, 1871 | Édouard Stephan | spiral galaxy |
| NGC 2308 | January 13, 1872 | Édouard Stephan | spiral galaxy |