NGC 7822 (Randal Healey)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7822

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NGC 7822

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NGC 7822

Hubble Pallet Image of NGC 7822.

NGC 7822 (also designated Sharpless 171, SH 2-171) is a young irregular emission nebula and star forming region of about 40 light-years across, located some 3,300 light-years away at the edge of a giant molecular cloud toward the northern constellation Cepheus. It is home to the young star cluster Berkeley 59, whose stars are just a few million years old. A supernova remnant associated with NGC 7822, indicates that a massive star has already exploded.

Berkeley 59 includes one of the hottest stars discovered in the vicinity of our Sun, namely BD+66 1673, which is an eclipsing binary system consisting of a very bright star that exhibits a surface temperature of nearly 45000 K and a luminosity ~100000 times that of the Sun.

Cosmic pillars of cold molecular gas and clouds of dark dust – often called elephant trunks – lie within NGC 7822. Powering the nebular glow are the young, hot stars of the Berkeley 59 cluster, whose powerful winds and radiation also sculpt and erode the dense pillar shapes. Stars could still be forming inside the pillars by gravitational collapse, but as the pillars are eroded away, any forming stars will ultimately be cut off from their reservoir of star stuff.

The refractors!
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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
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Star trails
Northern lights
Noctilucent clouds
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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
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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	Basic success
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Astrometry.net job	3318335
PixInsight job	n/a
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NGC 7822

NGC 7822

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NGC 7822

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