| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| NGC 2421 | William Herschel | open cluster |
| NGC 1331 | William Herschel | elliptical galaxy |
| NGC 1362 | William Herschel | lenticular galaxy |
| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| NGC 2421 | William Herschel | open cluster |
| NGC 1331 | William Herschel | elliptical galaxy |
| NGC 1362 | William Herschel | lenticular galaxy |