Celestial hemisphere:  Northern  ·  Constellation: Sagitta (Sge)  ·  Contains:  LBN 128  ·  LBN 129  ·  LDN 727  ·  Sh2-82
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The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82), Boris US5WU
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The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82)

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The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82), Boris US5WU
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The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82)

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Description

The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82) in the constellation Sagitta.

This combination HII region and reflection nebula, also called LBN 129 and DG 159, is ionised by the B0.5V star HD 231616. With the current distance estimate, it appears to be near the Vul OB4 association. Inside the cloud sources of infrared radiation have been identified, including one generated from a protostar deeply shrouded in gas. Radio waves originating from small sources have also been detected, a sign that there are processes of star formation on-going inside the cloud.

This image taken in August 2019.

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The Little Cocoon Nebula (Little Trifid Nebula), Sharpless 2-82 (Sh2-82), Boris US5WU