Messier 43
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| Messier 43 | |
 De Mairan's Nebula (M43) |
|
| Observation data: J2000 epoch | |
|---|---|
| Type | Reflection and Emission |
| Right ascension | 05h 35.6m |
| Declination | -05° 16′ |
| Distance | 1.6 kly |
| Apparent magnitude (V) | +9.0 |
| Apparent dimensions (V) | 20′x15′ |
| Constellation | Orion |
| Physical characteristics | |
| Notable features | Trapezium cluster |
| Other designations | M43, NGC 1982, De Mairan's Nebula |
| See also: Diffuse nebula, Lists of nebulae | |
Messier 43 (also known as M43, De Mairan's Nebula, and NGC 1982) is an H II region in the Orion constellation. It was discovered by Jean-Jacques Dortous de Mairan before 1731. The De Mairan's Nebula is part of the Orion Nebula, separated from the main nebula by a lane of dust. It is part of the much larger Orion Molecular Cloud Complex.
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