NGC 1982

Messier 43

Emission nebula
H II region
De Mairan's Nebula (M43) taken by the Wide Field Channel of Hubble’s Advanced Camera for Surveys.
Observation data: J2000 epoch
Right ascension	05h 35.6m
Declination	−05° 16′
Distance	1600 ly
Apparent magnitude (V)	+9.0
Apparent dimensions (V)	20′x15′
Constellation	Orion
Notable features	Trapezium cluster
Designations	M43, NGC 1982, De Mairan's Nebula
See also: 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.

Coordinates: 05^h 35.6^m 00^s, −05° 16′ 00″