Messier Object 3 (Doug Azwell)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 3 · NGC 5272

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Messier Object 3

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Messier Object 3

Messier Object 3 is a globular cluster in the constellation of Canes Venatici along the boarder of Bootes. Charles Messier discovered this bright ball of stars on May 3, 1764, and it was the first of his now famous list of 110 objects he discovered himself. It is considered to have a mass of around 450,000 suns and is located some 33,900 light years away. It's small radius of only 90 light years means that this mass of 450,000 solar masses is inside a ball of space which is only 180 light years in diameter. If you think about that a minute it seems like a long distance, but in reality it is a very small volume. If the Earth were somehow in a stable orbit around a star on the inside this cluster, likely there would never be night-time. Like all star clusters, the makeup of he material within the stars of the cluster have similar metallicity and therefore likely originated from the same interstellar gas cloud. This cluster is a rich collection of both red and blue stars as some of the heavier stars have progressed through the HR progression further and are now red giants. This give wonderful color to this stellar jewel box.

Please note: The following tables are updated every 24 hours.

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

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	...
Astrometry.net job	4377388
PixInsight job	P3G6AXOGAR2JL2M4FGBPVGSVH4A1TVO3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m09s.790
RA (top/left)	13h40m58s.998
RA (top/right)	13h43m17s.877
RA (bottom/right)	13h43m19s.669
RA (bottom/left)	13h41m00s.189

Dec (center)	+28°22′15″.99
Dec (top/left)	+28°10′55″.62
Dec (top/right)	+28°10′29″.37
Dec (bottom/right)	+28°33′36″.72
Dec (bottom/left)	+28°34′02″.51

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Messier Object 3

Messier Object 3

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Image Index:

Contribution Index (beta):

Messier Object 3

Messier Object 3

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Acquisition details

Description

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