Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B168  ·  Cocoon nebula  ·  IC 5146  ·  Sh2-125  ·  VdB147
IC 5146 / Caldwell 19 / SH2-125 / Cocoon Nebula, Ron Bokleman
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IC 5146 / Caldwell 19 / SH2-125 / Cocoon Nebula

IC 5146 / Caldwell 19 / SH2-125 / Cocoon Nebula, Ron Bokleman
Powered byPixInsight

IC 5146 / Caldwell 19 / SH2-125 / Cocoon Nebula

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Description

IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula object in the constellation Cygnus.

The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years.

When viewing IC 5146, dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon.

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IC 5146 / Caldwell 19 / SH2-125 / Cocoon Nebula, Ron Bokleman

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Cloudy Nights