Messier Index/M39
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![](//upload.wikimedia.org/wikipedia/commons/thumb/6/67/M39atlas.jpg/220px-M39atlas.jpg)
A image of M39.
Credit: w:2MASS/w:NASA.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/M39atlas.jpg/220px-M39atlas.jpg)
Credit: w:2MASS/w:NASA.
Open Cluster M39 (also known as Messier Object 39, Messier 39, M39, or NGC 7092) is an w:open cluster in the w:Cygnus constellation. It was discovered by w:Charles Messier in w:1764. M39 is at a distance of about 800 w:light years away from w:Earth. Its age is estimated to be from 200 to 300 million years.
It is located at Right Ascension 21hours, 32.2 minutes, and Declination +48 degrees 26'.