M12 (2017) (Gary Imm)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: M 12 · NGC 6218 · PGC 1099588 · PGC 1101748 · PGC 1101781 · PGC 1102958 · PGC 1103219 · PGC 1103420 · PGC 1110851

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M12 (2017)

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M12 (2017)

M12 is a mag 6 globular cluster located 16,000 light-years away in the constellation of Ophiuchus at a southerly declination of -2 degrees. It is 15 arc-minutes wide and has a diameter of 70 light years. It contains about 200,000 stars and is loosely concentrated, with a Shapley-Sawyer rating of 9 (out of 12).

M12 orbits our Milky Way galaxy in an elliptical orbit in which it periodically passes through the plane of our galaxy near the central core. Observations by astronomers have revealed that this globular cluster has apparently had as many as 1 million stars stripped away from it by the gravitational pull of the Milky Way during passes near the core of our galaxy. The cluster is now devoid of low mass stars. The stripping process is a slow one, and the star cluster is expected to last many more years before all of its stars are completely stripped away.

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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
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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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Noctilucent clouds
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Distribution of data sources

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	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	Advanced success
Started	...
Astrometry.net job	1609312
PixInsight job	VIPG1CY6A1KLPSCZ1YBIHIBVFSFH54A1
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h47m13s.447
RA (top/left)	16h48m43s.970
RA (top/right)	16h45m36s.492
RA (bottom/right)	16h45m42s.907
RA (bottom/left)	16h48m50s.445

Dec (center)	-01°57′04″.100
Dec (top/left)	-01°42′27″.92
Dec (top/right)	-01°45′19″.22
Dec (bottom/right)	-02°11′41″.96
Dec (bottom/left)	-02°08′49″.39

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M12 (2017)

M12 (2017)

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M12 (2017)

M12 (2017)

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