Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  PK047+42.1
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Abell 39, Curtis MacDonald
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Abell 39

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Abell 39, Curtis MacDonald
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Abell 39

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Description

Abell 39 is a low surface brightness planetary nebula in the constellation of Hercules. It is estimated to be about 7000 light-years from earth. It is almost perfectly spherical and also one of the largest known spheres with a diameter of about five light-years.

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Abell 39, Curtis MacDonald