Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  PK047+42.1
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Abell 39, James E.
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Abell 39

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Abell 39, James E.
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Abell 39

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Description

Abell 39 is a low surface brightness planetary nebula in Hercules. It is the 39th entry in George Abell's 1966 "Abell Catalog of Planetary Nebula" of 86 old planetary nebulae which either Abell or Albert George Wilson discovered before August 1955 as part of the National Geographic Society - Palomar Observatory Sky Survey. It is estimated to be about 6800 light years from Earth. It is almost perfectly spherical and also one of the largest known spheres with a radius of about 2.5 light years. (Wikipedia)

Taken over several nights: April 21-24, May 19

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