| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| NGC 2877 | March 28, 1864 | Albert Marth | galaxy |
| NGC 2878 | March 28, 1864 | Albert Marth | spiral galaxy |
| NGC 2923 | April 1864 | Albert Marth | intermediate spiral galaxy |
| NGC 2928 | April 1864 | Albert Marth | spiral galaxy |
| NGC 2941 | April 1864 | Albert Marth | lenticular galaxy |
| NGC 2943 | April 1864 | Albert Marth | elliptical galaxy |
| NGC 2946 | April 1864 | Albert Marth | spiral galaxy |
| NGC 3391 | April 1864 | Albert Marth | spiral galaxy |
| NGC 3399 | April 1864 | Albert Marth | lenticular galaxy |
| NGC 2786 | April 5, 1864 | Albert Marth | spiral galaxy |
| NGC 3357 | April 5, 1864 | Albert Marth | elliptical galaxy |
| NGC 3919 | April 6, 1864 | Heinrich Louis d'Arrest | elliptical galaxy |
| NGC 4295 | April 6, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 4165 | April 8, 1864 | Heinrich Louis d'Arrest | intermediate spiral galaxy |
| NGC 2949-1 | April 13, 1864 | Albert Marth | lenticular galaxy |
| NGC 3405-2 | April 13, 1864 | Albert Marth | galaxy |
| NGC 4563 | April 13, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 3569 | April 27, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 3042 | April 30, 1864 | Albert Marth | lenticular galaxy |
| NGC 3062 | April 30, 1864 | Albert Marth | spiral galaxy |
| NGC 3126 | April 30, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 2896 | May 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| 80 Sappho | May 2, 1864 | N. R. Pogson | asteroid |
| NGC 4090 | May 2, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 4093 | May 4, 1864 | Heinrich Louis d'Arrest | elliptical galaxy |
| NGC 3844 | May 8, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 3855 | May 8, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 3873 | May 8, 1864 | Heinrich Louis d'Arrest | elliptical galaxy |
| NGC 3048-1 | May 9, 1864 | Albert Marth | galaxy |
| NGC 3816 | May 9, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 4613 | May 9, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 4614 | May 9, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 4615 | May 9, 1864 | Heinrich Louis d'Arrest | spiral galaxy |
| NGC 3787 | May 10, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 4170 | May 22, 1864 | Heinrich Louis d'Arrest | star |
| NGC 4171 | May 22, 1864 | Heinrich Louis d'Arrest | star |
| NGC 4249 | May 26, 1864 | Albert Marth | lenticular galaxy |
| NGC 4266 | May 26, 1864 | Albert Marth | spiral galaxy |
| NGC 4282 | May 26, 1864 | Albert Marth | lenticular galaxy |
| NGC 4287 | May 26, 1864 | Albert Marth | spiral galaxy |
| NGC 236 | August 3, 1864 | Albert Marth | intermediate spiral galaxy |
| NGC 141 | August 29, 1864 | Albert Marth | spiral galaxy |
| NGC 1107 | September 2, 1864 | Albert Marth | lenticular galaxy |
| NGC 359 | September 2, 1864 | Albert Marth | elliptical galaxy |
| NGC 364 | September 2, 1864 | Albert Marth | lenticular galaxy |
| NGC 900 | September 5, 1864 | Albert Marth | lenticular galaxy |
| NGC 901 | September 5, 1864 | Albert Marth | lenticular galaxy |
| NGC 916 | September 5, 1864 | Albert Marth | lenticular galaxy |
| NGC 919 | September 5, 1864 | Albert Marth | spiral galaxy |
| NGC 928 | September 5, 1864 | Albert Marth | spiral galaxy |
| NGC 1219 | September 9, 1864 | Albert Marth | spiral galaxy |
| NGC 1254 | September 9, 1864 | Albert Marth | lenticular galaxy |
| NGC 1462 | September 13, 1864 | Albert Marth | spiral galaxy |
| NGC 1539-1 | September 18, 1864 | Albert Marth | galaxy |
| NGC 805 | September 26, 1864 | Heinrich Louis d'Arrest | lenticular galaxy |
| NGC 291 | September 27, 1864 | Albert Marth | spiral galaxy |
| NGC 297 | September 27, 1864 | Albert Marth | elliptical galaxy |
| NGC 298 | September 27, 1864 | Albert Marth | flocculent spiral galaxy |
| NGC 325 | September 27, 1864 | Albert Marth | elliptical galaxy |
| NGC 327 | September 27, 1864 | Albert Marth | spiral galaxy |