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Flamsteed found 3 NGC-objects; only 1 was new: NGC 2244, the cluster around 12 Monocerotis. The known ones are M 8 and M 41. All objects are listed in: Flamsteed, J., Historia Coelestis Britannica (London 1712). He used the 9.7" refractor at Greenwich Observatory.
| D | N | NI | Y | M | D | Ap | I | T | Discoverer | Observer | Name | Con | Type | S | ID |
| 1 | N | 2244 | 1690 | 2 | 17 | 9,7 | Rr | v | Herschel W. 13.1.1783 | 12 Mon | MON | II3p | 4 | NGC 2239 (Herschel J. 3.1830) | |
| N | 2287 | 1702 | 2 | 16 | 9,7 | Rr | v | Aristoteles -325 | Hodierna 1654? | M 41 | CMA | II3m | 4 | ||
| N | 6523 | 1680 | 9,7 | Rr | v | Hodierna 1654 | de Chéseaux 1764 | M 8, Lagoon Nebula | SGR | EN | 2 | NGC 6533 (Herschel W. 12.7.1784) |
