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Cocoon Nebula

C19, IC 5146

Proper NameCocoon Nebula
Caldwell NumberC19
NGC/IC NumberIC 5146
Right Ascension21h 53m 29s
Declination+47° 14' 46"
Distancec.2,500 light years
c.800 parsecs
Mean DiameterApparent: 12'
Actual: c.15 light years
Optimum VisibilityAugust / September (Usually visible from northern latitudes)
NotesThe Cocoon Nebula is approximately spherical, illuminated from within by the young stars of the cluster Collinder 470. It is notable for a meandering stream of dark material, designated Barnard 168, running out far to the west of the bright main nebula.

Imagery provided by Aladin sky atlas


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