Sh2-82 Little Cocoon (Marco Lorenzi)

Celestial hemisphere: Northern · Constellation: Sagitta (Sge) · Contains: HD183419 · HD183849 · HD183989 · HD231533 · HD231566 · HD231567 · HD231576 · HD231586 · HD231601 · HD231603 · HD231606 · HD231615 · HD231616 · HD231622 · HD231654 · HD231667 · HD231681 · HD231683 · HD231695 · HD231696 · HD350097 · HD350098 · HD350099 · HD350100 · HD350101 · HD350102 · HD350103 · HD350104 · HD350105 · LBN 128 · And 3 more.

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Sh2-82 Little Cocoon

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Sh2-82 Little Cocoon

Sharpless 2-82 (Sh2-82) is a small yet beautiful nebula located about 3,600 light-years away in the constellation of Sagitta. It consists of glowing gas and dust, with an emission nebula surrounded by a faint reflection nebula. This combination gives Sh2-82 its appearance, where the emission nebula shines in red from ionized hydrogen, and the reflection nebula casts a soft, blue glow from nearby starlight. At its center is HD 231616, a bright star that powers the nebula's glow by emitting intense ultraviolet radiation. This radiation ionizes the gas, creating the nebula's vibrant colors.

Sh2-82 is also embedded in a dark cloud called LDN 727, a dense region where young stars are forming. The cloud's density blocks light from background stars, creating a striking contrast that highlights Sh2-82’s glow. Sh2-82 is more than just beautiful; it's a glimpse into how stars are born. Its active young stars and dynamic environment make it an important object for astronomers studying star formation. Though small, Sh2-82 captures the imagination with its glowing colors and intriguing role in the Milky Way.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
PixInsight job	XCY4O0EKO8MFCPU5RFUYEWBK7UQ3RBX9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h30m09s.185
RA (top/left)	19h28m23s.692
RA (top/right)	19h28m21s.927
RA (bottom/right)	19h31m54s.450
RA (bottom/left)	19h31m57s.200

Dec (center)	+18°12′57″.57
Dec (top/left)	+18°46′49″.81
Dec (top/right)	+17°39′24″.52
Dec (bottom/right)	+17°39′00″.59
Dec (bottom/left)	+18°46′23″.48

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