Thor’s Helmet Nebula
E514436
Thor’s Helmet Nebula is an emission nebula and wind-blown bubble surrounding a massive Wolf–Rayet star, notable for its helmet-like shape and bright filaments.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
astronomical object ⓘ emission nebula ⓘ wind-blown bubble ⓘ |
| alsoKnownAs |
Gum 4
NERFINISHED
ⓘ
NGC 2359 NERFINISHED ⓘ Sh2-298 NERFINISHED ⓘ Sharpless 2-298 NERFINISHED ⓘ |
| angularSize | about 8 arcminutes ⓘ |
| apparentMagnitude | approximately 11.5 ⓘ |
| associatedWith |
massive star evolution
ⓘ
pre-supernova stages of massive stars ⓘ |
| belongsToCatalogue |
Gum catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ Sharpless catalogue NERFINISHED ⓘ |
| catalogueNumber |
Gum 4
NERFINISHED
ⓘ
NGC 2359 NERFINISHED ⓘ Sh2-298 NERFINISHED ⓘ |
| centralStarSpectralType | WN4 ⓘ |
| centralStarType | Wolf–Rayet star ⓘ |
| declination | −13° 13′ ⓘ |
| distanceFromEarth |
approximately 11,000 light-years
ⓘ
approximately 3,400 parsecs ⓘ |
| emits |
hydrogen-alpha radiation
ⓘ
oxygen-III emission ⓘ |
| environment | star-forming region in the Galactic plane ⓘ |
| formedBy | stellar winds from a massive star ⓘ |
| hasCentralStar | WR 7 NERFINISHED ⓘ |
| hasColor |
bluish-green in OIII filters
ⓘ
reddish in H-alpha emission ⓘ |
| hasFeature | central bubble surrounded by complex filaments ⓘ |
| hasMorphology | bubble with bright filaments ⓘ |
| hasShape | helmet-like ⓘ |
| hasStructure |
bow-shock-like features
ⓘ
filamentary arcs ⓘ |
| isIn |
Milky Way galaxy
NERFINISHED
ⓘ
Orion Arm NERFINISHED ⓘ |
| isIonizedBy | radiation from Wolf–Rayet star WR 7 ⓘ |
| isTargetFor |
amateur astrophotography
ⓘ
professional spectroscopic studies ⓘ |
| locatedInConstellation | Canis Major NERFINISHED ⓘ |
| namedAfter | Norse god Thor’s helmet ⓘ |
| observedInWavelength |
infrared
ⓘ
optical ⓘ radio ⓘ |
| rightAscension | 07h 18m ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.