Butterfly Cluster
E472718
The Butterfly Cluster is a bright open star cluster in the constellation Scorpius, noted for its distinctive butterfly-like shape and visibility to the naked eye in dark skies.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
NGC object ⓘ astronomical object ⓘ open star cluster ⓘ |
| age_Myr | approximately 100 ⓘ |
| alsoKnownAs |
M6
NERFINISHED
ⓘ
Messier 6 NERFINISHED ⓘ NGC 6405 NERFINISHED ⓘ |
| angularSize_arcmin | 25 ⓘ |
| apparentMagnitudeRange | 4.2–4.5 ⓘ |
| apparentMagnitudeV | 4.2 ⓘ |
| bestObservedWith |
binoculars
ⓘ
small telescope ⓘ |
| bestSeenIn | summer ⓘ |
| brightestStar | BM Scorpii NERFINISHED ⓘ |
| brightestStarApparentMagnitude | about 5.5 ⓘ |
| catalog |
Messier Catalogue
NERFINISHED
ⓘ
New General Catalogue NERFINISHED ⓘ |
| cataloguedBy | Charles Messier NERFINISHED ⓘ |
| clusterType | loose open cluster ⓘ |
| constellation | Scorpius NERFINISHED ⓘ |
| contains |
many B-type stars
ⓘ
red giant stars ⓘ |
| declination | −32° 13′ ⓘ |
| declinationEpoch | J2000 ⓘ |
| discovererNationality | Italian ⓘ |
| discoveryBy | Giovanni Battista Hodierna NERFINISHED ⓘ |
| discoveryYear | before 1654 ⓘ |
| distanceFromEarth_ly | approximately 1600 ⓘ |
| distanceFromEarth_pc | approximately 490 ⓘ |
| galacticLatitude_deg | −3.3 ⓘ |
| galacticLongitude_deg | 330.8 ⓘ |
| hemisphereVisibility | southern celestial hemisphere ⓘ |
| locatedIn |
Milky Way
ⓘ
Sagittarius Arm of the Milky Way NERFINISHED ⓘ |
| messierNumber | 6 ⓘ |
| metallicity | slightly above solar ⓘ |
| nearbyConstellationFeature | tail of Scorpius ⓘ |
| nearbyObject | Messier 7 NERFINISHED ⓘ |
| ngcNumber | 6405 ⓘ |
| notableFor | distinctive butterfly-like appearance in small instruments ⓘ |
| notableShape | butterfly-like pattern ⓘ |
| numberOfStars | more than 100 ⓘ |
| observedIn | optical wavelengths ⓘ |
| observingRequirement | dark skies recommended ⓘ |
| rightAscension | 17h 40m ⓘ |
| rightAscensionEpoch | J2000 ⓘ |
| skyLocationDescription | northwest of Shaula (Lambda Scorpii) ⓘ |
| visibility | visible to the naked eye in dark skies ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.