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The 19th century
1,725 inventions and discoveries
| Invention or discovery | Date | Inventor or discoverer | Type |
|---|---|---|---|
| NGC 373 | December 12, 1876 | John Louis Emil Dreyer | elliptical galaxy |
| NGC 1155 | December 15, 1876 | Édouard Stephan | lenticular galaxy |
| NGC 1346 | December 15, 1876 | Édouard Stephan | spiral galaxy |
| NGC 1508 | December 15, 1876 | Édouard Stephan | lenticular galaxy |
| NGC 1691 | December 15, 1876 | Édouard Stephan | lenticular galaxy |
| NGC 195 | 1877 | Wilhelm Tempel | spiral galaxy |
| NGC 2702 | 1877 | Wilhelm Tempel | star |
| NGC 2703 | 1877 | Wilhelm Tempel | double star |
| NGC 2705 | 1877 | Wilhelm Tempel | star |
| NGC 2707 | 1877 | Wilhelm Tempel | star |
| NGC 2940 | 1877 | Wilhelm Tempel | lenticular galaxy |
| NGC 4186 | 1877 | Wilhelm Tempel | spiral galaxy |
| NGC 4360 | 1877 | Wilhelm Tempel | brightest cluster galaxy |
| NGC 4533 | 1877 | Wilhelm Tempel | spiral galaxy |
| NGC 1195 | January 8, 1877 | John Louis Emil Dreyer | lenticular galaxy |
| 170 Maria | January 10, 1877 | Henri Joseph Anastase Perrotin | asteroid |
| NGC 1843 | January 17, 1877 | Édouard Stephan | intermediate spiral galaxy |
| NGC 2149 | January 17, 1877 | Édouard Stephan | reflection nebula |
| NGC 2337 | January 17, 1877 | Édouard Stephan | galaxy |
| NGC 2444 | January 18, 1877 | Édouard Stephan | lenticular galaxy |
| NGC 2445 | January 18, 1877 | Édouard Stephan | galaxy |
| NGC 2524 | January 22, 1877 | Édouard Stephan | lenticular galaxy |
| NGC 2528 | January 22, 1877 | Édouard Stephan | radio galaxy |
| NGC 2538 | February 2, 1877 | Édouard Stephan | spiral galaxy |
| NGC 2557 | February 2, 1877 | Édouard Stephan | lenticular galaxy |
| NGC 2572 | February 2, 1877 | Édouard Stephan | spiral galaxy |
| NGC 2644 | February 6, 1877 | Édouard Stephan | spiral galaxy |
| NGC 2668 | February 7, 1877 | Édouard Stephan | spiral galaxy |
| NGC 2958 | March 7, 1877 | Édouard Stephan | spiral galaxy |
| NGC 3069 | March 15, 1877 | John Louis Emil Dreyer | lenticular galaxy |
| NGC 3117 | March 15, 1877 | Édouard Stephan | elliptical galaxy |
| NGC 3323 | March 15, 1877 | Édouard Stephan | spiral galaxy |
| NGC 3570 | March 15, 1877 | Édouard Stephan | lenticular galaxy |
| NGC 3574 | March 15, 1877 | Édouard Stephan | lenticular galaxy |
| NGC 1363 | December 31, 1877 | Sherburne Wesley Burnham | spiral galaxy |
| NGC 1519 | January 2, 1878 | Wilhelm Tempel | spiral galaxy |
| NGC 1741 | January 6, 1878 | Édouard Stephan | interacting galaxies |
| 180 Garumna | January 29, 1878 | Henri Joseph Anastase Perrotin | asteroid |
| 181 Eucharis | February 2, 1878 | Pablo Cottenot | asteroid |
| NGC 4202 | February 6, 1878 | David Peck Todd | lenticular galaxy |
| NGC 3541 | February 7, 1878 | Wilhelm Tempel | spiral galaxy |
| NGC 2378 | February 8, 1878 | Édouard Stephan | binary star |
| NGC 3537-1 | February 19, 1878 | Wilhelm Tempel | lenticular galaxy |
| NGC 2575 | February 23, 1878 | Édouard Stephan | spiral galaxy |
| NGC 2450 | February 26, 1878 | Édouard Stephan | radio galaxy |
| NGC 2590 | February 26, 1878 | Édouard Stephan | spiral galaxy |
| NGC 3410 | April 1878 | Lawrence Parsons, 4th Earl of Rosse | intermediate spiral galaxy |
| NGC 3999 | April 25, 1878 | Lawrence Parsons, 4th Earl of Rosse | lenticular galaxy |
| NGC 4000 | April 25, 1878 | Lawrence Parsons, 4th Earl of Rosse | spiral galaxy |
| NGC 4011 | April 26, 1878 | John Louis Emil Dreyer | lenticular galaxy |
| NGC 4015-2 | April 26, 1878 | John Louis Emil Dreyer | low-surface-brightness galaxy |
| NGC 4021 | April 26, 1878 | John Louis Emil Dreyer | elliptical galaxy |
| NGC 4023 | April 26, 1878 | John Louis Emil Dreyer | spiral galaxy |
| NGC 909 | October 30, 1878 | Édouard Stephan | elliptical galaxy |
| NGC 912 | November 30, 1878 | Édouard Stephan | lenticular galaxy |
| NGC 914 | November 30, 1878 | Édouard Stephan | radio galaxy |
| NGC 988 | 1879 | Édouard Stephan | spiral galaxy |
| NGC 228 | October 10, 1879 | Édouard Stephan | spiral galaxy |
| NGC 707 | November 25, 1879 | Wilhelm Tempel | low-ionization nuclear emission-line region |
| NGC 968 | December 5, 1879 | Édouard Stephan | elliptical galaxy |