M42
E459020
M42, also known as the Orion Nebula, is a bright, nearby stellar nursery where new stars are actively forming within the constellation Orion.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
Messier object ⓘ NGC object ⓘ diffuse nebula ⓘ emission nebula ⓘ star-forming region ⓘ |
| alsoKnownAs |
Messier 42
NERFINISHED
ⓘ
NGC 1976 NERFINISHED ⓘ Orion Nebula NERFINISHED ⓘ |
| angularSize | about 65×60 arcminutes ⓘ |
| apparentMagnitudeV | about 4.0 ⓘ |
| bestSeenIn | winter sky of the Northern Hemisphere ⓘ |
| cataloguedBy |
Charles Messier
NERFINISHED
ⓘ
Nicolas-Claude Fabri de Peiresc NERFINISHED ⓘ |
| contains |
Herbig–Haro objects
NERFINISHED
ⓘ
Theta1 Orionis A NERFINISHED ⓘ Theta1 Orionis B NERFINISHED ⓘ Theta1 Orionis C NERFINISHED ⓘ Theta1 Orionis D NERFINISHED ⓘ Trapezium Cluster NERFINISHED ⓘ dark nebula structures ⓘ massive OB association stars ⓘ protoplanetary disks ⓘ reflection nebula components ⓘ young stellar objects ⓘ |
| declination | −05° 23′ ⓘ |
| distanceFromEarth |
about 1,344 light-years
ⓘ
about 412 parsecs ⓘ |
| dominantEmissionLine |
doubly ionized oxygen [O III]
ⓘ
hydrogen alpha ⓘ |
| galacticEnvironment | Orion Arm of the Milky Way NERFINISHED ⓘ |
| hasApproximateMass | about 2,000 solar masses of gas ⓘ |
| hasSpectralType | H II emission spectrum ⓘ |
| ionizedBy |
Theta1 Orionis C
NERFINISHED
ⓘ
massive O-type stars ⓘ |
| is |
a nearby laboratory for studying star formation
ⓘ
one of the brightest nebulae in the night sky ⓘ |
| liesIn | Orion's Sword NERFINISHED ⓘ |
| liesSouthOf | Orion's Belt NERFINISHED ⓘ |
| locatedInConstellation | Orion NERFINISHED ⓘ |
| locatedInGalaxy | Milky Way NERFINISHED ⓘ |
| MessierNumber | 42 ⓘ |
| NGCNumber | 1976 ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ radio ⓘ |
| observedSince | antiquity ⓘ |
| partOf | Orion Molecular Cloud Complex NERFINISHED ⓘ |
| rightAscension | 05h 35m ⓘ |
| visibleTo | naked eye ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.