Celestial hemisphere:  Southern  ·  Constellation: Serpens (Ser)  ·  Contains:  NGC 6604  ·  NGC 6625
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NGC6604, Dieter Wiedenhofer
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NGC6604

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
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NGC6604, Dieter Wiedenhofer
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NGC6604

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Description

NGC 6604 is a young=10.5px open cluster of stars in the equatorialconstellation of Serpens, positioned about 1.5° north of the Eagle Nebula (NGC 6611).=10.5px The cluster was discovered by William Herschel on July 15, 1784. It is located at a distance of 4,580=10.5px light years from the Sun, about 210 ly (65 pc) above the galactic plane.=10.5px  NGC 6604 forms the densest part of the Ser OB2 association of co-moving stars.[This cluster is fairly compact with a Trumpler class of I3p, and is still undergoing star formation. It lies at the heart of an H II region with the identifier S54, and the two are most likely linked.=10.5px The cluster has an estimated age of 6.5=10.5px  million years and contains several massive stars of the OB type. One of these is the high mass triple star system HD 167971, which includes the over-contact eclipsing binary MY Ser. It is one of the most luminous stars in the galaxy. HD 168112 is another colliding-wind binary in the cluster; both systems are over-luminous in their X-ray emission.

Source: https://en.wikipedia.org/wiki/NGC_6604

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NGC6604, Dieter Wiedenhofer