Cone Nebula region (James E.)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: 15 S Mon · B39 · Christmas Tree Cluster · LBN 899 · LBN 902 · LBN 911 · LBN 912 · LBN 922 · LDN 1610 · LDN 1613 · NGC 2259 · NGC 2264 · PK201+02.1 · Sh2-273 · The star 15Mon

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Cone Nebula region

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Cone Nebula region

The Cone Nebula is an HII region in Monoceros. It forms part of the nebulosity surrounding the Christmas Tree Cluster - the designation NGC 2264 refers to both the cluster and nebula. The Cone Nebula, discovered by William Herschel in 1785, is approximately seven light years long and is about 2700 light years from Earth. The cone's shape comes from a dark absorption nebula consisting of cold molecular hydrogen and dust in front of a faint emission nebula containing hydrogen ionized by S Monocerotis, the brightest star of NGC 2264. Another object within this complex region is the Fox Fur Nebula (Sh2- 273) which is also illuminated by the ultraviolet radiation from the hot, blue stars of the NGC 2264 cluster.

Taken over several nights: Dec 13, 20, 25 and 27, 2021; Jan 4, 2022.

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Status	Advanced success
Started	...
Astrometry.net job	5378671
PixInsight job	1KXBFVRPY2ELB3WLQLV8QL0JASS2KA5B
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h40m06s.76
RA (top/left)	06h36m46s.92
RA (top/right)	06h36m42s.33
RA (bottom/right)	06h43m23s.38
RA (bottom/left)	06h43m32s.21

Dec (center)	+10°07′14″.1
Dec (top/left)	+11°22′32″.8
Dec (top/right)	+08°52′46″.5
Dec (bottom/right)	+08°51′45″.4
Dec (bottom/left)	+11°21′36″.1

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