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- Heinrich Louis d'Arrest
Credited to Heinrich Louis d'Arrest
139 inventions and discoveries
| Invention or discovery | Date | Type |
|---|---|---|
| NGC 714 | October 28, 1850 | lenticular galaxy |
| NGC 717 | October 28, 1850 | lenticular galaxy |
| NGC 607 | August 23, 1855 | double star |
| NGC 588 | October 2, 1861 | H II region |
| NGC 592 | October 2, 1861 | H II region |
| NGC 4205 | October 4, 1861 | spiral galaxy |
| NGC 374 | October 7, 1861 | lenticular galaxy |
| NGC 719 | November 24, 1861 | lenticular galaxy |
| NGC 2675 | December 2, 1861 | elliptical galaxy |
| NGC 791 | December 3, 1861 | elliptical galaxy |
| NGC 3929 | December 4, 1861 | lenticular galaxy |
| NGC 1642 | December 29, 1861 | spiral galaxy |
| NGC 3827 | December 29, 1861 | radio galaxy |
| NGC 1586 | December 30, 1861 | spiral galaxy |
| NGC 1720 | December 30, 1861 | spiral galaxy |
| NGC 1752 | December 30, 1861 | spiral galaxy |
| NGC 3221 | 1862 | spiral galaxy |
| NGC 3287 | 1862 | spiral galaxy |
| NGC 2699 | January 4, 1862 | elliptical galaxy |
| NGC 2569 | February 19, 1862 | lenticular galaxy |
| NGC 3251 | February 19, 1862 | spiral galaxy |
| NGC 4269 | March 4, 1862 | lenticular galaxy |
| NGC 4324 | March 4, 1862 | lenticular galaxy |
| NGC 2749 | March 5, 1862 | elliptical galaxy |
| NGC 3806 | April 21, 1862 | low-surface-brightness galaxy |
| NGC 4257 | April 21, 1862 | spiral galaxy |
| NGC 3012 | April 30, 1862 | elliptical galaxy |
| NGC 587 | August 27, 1862 | intermediate spiral galaxy |
| NGC 721 | August 27, 1862 | spiral galaxy |
| NGC 472 | August 29, 1862 | lenticular galaxy |
| NGC 502 | September 25, 1862 | lenticular galaxy |
| NGC 522 | September 25, 1862 | spiral galaxy |
| NGC 525 | September 25, 1862 | lenticular galaxy |
| NGC 1268 | February 14, 1863 | spiral galaxy |
| NGC 1270 | February 14, 1863 | elliptical galaxy |
| NGC 1272 | February 14, 1863 | elliptical galaxy |
| NGC 1273 | February 14, 1863 | lenticular galaxy |
| NGC 1334 | February 14, 1863 | spiral galaxy |
| NGC 3376 | February 19, 1863 | lenticular galaxy |
| NGC 4629 | February 19, 1863 | intermediate spiral galaxy |
| NGC 2753-2 | February 21, 1863 | elliptical galaxy |
| NGC 2929 | February 21, 1863 | spiral galaxy |
| NGC 2931 | February 21, 1863 | spiral galaxy |
| NGC 2737 | February 23, 1863 | spiral galaxy |
| NGC 2738 | February 23, 1863 | radio galaxy |
| NGC 4078 | April 17, 1863 | lenticular galaxy |
| NGC 4351 | May 19, 1863 | spiral galaxy |
| NGC 582 | August 9, 1863 | spiral galaxy |
| NGC 4139 | August 10, 1863 | lenticular galaxy |
| NGC 503 | August 13, 1863 | lenticular galaxy |
| NGC 616 | August 14, 1863 | binary star |
| NGC 2614 | December 1863 | spiral galaxy |
| NGC 938 | December 30, 1863 | elliptical galaxy |
| NGC 1298 | January 4, 1864 | elliptical galaxy |
| NGC 1305 | January 4, 1864 | lenticular galaxy |
| NGC 2064 | January 11, 1864 | reflection nebula |
| NGC 558 | February 1864 | elliptical galaxy |
| NGC 3991 | February 5, 1864 | emission-line galaxy |
| NGC 3919 | April 6, 1864 | elliptical galaxy |
| NGC 4295 | April 6, 1864 | lenticular galaxy |