NGC 2359
E509403
NGC 2359, also known as Thor's Helmet, is an emission nebula with a distinctive helmet-like shape located in the constellation Canis Major.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
deep-sky object
ⓘ
emission nebula ⓘ nebula ⓘ |
| alsoKnownAs |
Gum 4
NERFINISHED
ⓘ
Sh 2-298 NERFINISHED ⓘ Sharpless 2-298 NERFINISHED ⓘ Thor's Helmet NERFINISHED ⓘ Thor’s Helmet Nebula NERFINISHED ⓘ |
| apparentMagnitudeV | approximately 11.5 ⓘ |
| bestSeenInMonths | winter (Northern Hemisphere) ⓘ |
| catalog |
Gum
NERFINISHED
ⓘ
NGC NERFINISHED ⓘ Sharpless NERFINISHED ⓘ |
| centralStar |
HD 56925
NERFINISHED
ⓘ
WR 7 NERFINISHED ⓘ |
| discoveredBy | William Herschel NERFINISHED ⓘ |
| discoveryDate | 1785 ⓘ |
| distanceFromEarth |
approximately 11,000 light-years
ⓘ
approximately 3,400 parsecs ⓘ |
| excitedBy | Wolf–Rayet star ⓘ |
| hasAngularSize | approximately 8 arcminutes ⓘ |
| hasColor | bluish-green in narrowband images ⓘ |
| hasDeclination | −13° 13′ ⓘ |
| hasEmissionLines |
hydrogen
ⓘ
oxygen ⓘ sulfur ⓘ |
| hasEmissionType | H II region ⓘ |
| hasIonizationSource | ultraviolet radiation from WR 7 ⓘ |
| hasMorphology |
bubble-like structure
ⓘ
helmet-like shape ⓘ |
| hasRightAscension | 07h 18m ⓘ |
| hasSpectralTypeOfCentralStar | WN4 ⓘ |
| hasStructure |
filamentary arcs
ⓘ
multiple shells ⓘ |
| isAssociatedWith |
massive star evolution
ⓘ
strong stellar winds ⓘ |
| isInHemisphere | southern celestial hemisphere ⓘ |
| isObservedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| isPartOf | New General Catalogue of Nebulae and Clusters of Stars NERFINISHED ⓘ |
| isPopularFor | astrophotography ⓘ |
| isTypeOfNebula | wind-blown bubble ⓘ |
| locatedIn |
Milky Way
ⓘ
Orion Arm NERFINISHED ⓘ |
| locatedInConstellation | Canis Major NERFINISHED ⓘ |
| nearbyBrightStar | Sirius (in same constellation) NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.