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Post Info TOPIC: NGC 7129


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NGC 7129
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NGC 7129 (also OCL 240 and LBN 497) is a magnitude +11.5 open cluster embedded in a reflection nebula located at a distance of about 3,300 light years in the constellation Cepheus.

The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Windsor Road, Slough, Berkshire, on the 18th October, 1794.  

Position (J2000): R.A. 21h 42m 58.9s  |  Dec. +66° 06' 47"

A recent survey indicates the cluster contains more than 130 stars less than 1 million years old
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The stellar nursery NGC 7129 lies 3,000 light-years away in the constellation Cepheus.
It contains stars that are only about a million years old.


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Our own Sun probably formed in something similar some five billion years ago.
Noticeable in the image are the lovely bluish dust clouds that reflect the starlight, and the smaller, deep red crescent shapes that are also markers of energetic, young stellar objects. Known as Herbig-Haro objects, their shape and colour is characteristic of glowing hydrogen gas shocked by jets streaming away from newborn stars.

Eventually, the natal gas and dust in the region will be dispersed, leaving behind a loose cluster.

NGC 7129 is about 10 light-years across.

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