NGC 6820 and NGC 6823

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You can help expand this article with text translated from the corresponding article in French. Click [show] for important translation instructions. View a machine-translated version of the French article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at [[:fr:NGC 6823]]; see its history for attribution. You may also add the template {{Translated|fr|NGC 6823}} to the talk page. For more guidance, see Wikipedia:Translation.

Emission Nebula NGC6820 with Open Cluster NGC6823

Emission nebula
NGC 6820/NGC 6823
Observation data: J2000.0 epoch
Right ascension	19h 42m 27.92s[1]
Declination	+23° 05′ 14.7″[1]
Distance	6,000[2] ly
Apparent dimensions (V)	40 arcmins
Constellation	Vulpecula
Designations	Nebula (NGC 6820, Sh2-86)
See also: Lists of nebulae

NGC 6820 is a small emission nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission nebula called Sh 2-86. The whole area of nebulosity is often referred to as NGC 6820.^[3]

M27, the Dumbbell Nebula, is found three degrees to the east, and α Vulpeculae three degrees to the west.

Open star cluster NGC 6823 is about 50 light-years across and lies about 6,000 light-years away. The center of the cluster formed about two million years ago and is dominated in brightness by a host of bright young blue stars. Outer parts of the cluster contain even younger stars.^[2] It forms the core of the Vulpecula OB1 stellar association.^[4]

Wikimedia Commons has media related to NGC 6820.

Wikimedia Commons has media related to NGC 6823.

• National Optical Observatory Archived 2014-07-01 at the Wayback Machine