NGC 6820 (also known as Sh2-86) is an emission nebula in the constellation Vulpecula. It is located in the south-central part of the constellation, about 3.5° west of the famous planetary nebula M27. At the center of the nebula can be seen the bright open cluster NGC 6823; Cloud gases receive light from young stars of this cluster, part of the association Vulpecula OB1, ionizing and thus becoming bright.

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