The M81 Group (Andrew Barton)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · HD85458 · HD86574 · M 81 · M 82 · NGC 3031 · NGC 3034 · NGC 3077

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The M81 Group

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The M81 Group

The M81 group is a collection of galaxies located approximately 12 million light-years away from Earth in the constellation Ursa Major. At the lower center of this image lies the largest member, M81, a grand design spiral galaxy that is one of the brightest in the night sky. M81 is home to a supermassive black hole at its center, which is approximately 70 million times more massive than our sun. In the upper right lies M81's smaller neighbor, M82, which is also known as the "Cigar Galaxy" due to its elongated shape. M82 is a starburst galaxy, meaning it is undergoing an intense period of star formation, resulting in a high rate of supernovae explosions. At the left is the third major member of the M81 group, NGC 3077, a dwarf, disrupted, elliptical galaxy. NGC 3077 is also experiencing active star formation. The blue fuzzy patch in the upper left quadrant of M81 is Holmberg IX or UGC 5336, a dwarf irregular galaxy and satellite of M81. It is believed that the gravitational interactions between these galaxies have played a significant role in shaping their structures and influencing their star formation activity.

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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	7525549
PixInsight job	G4MAVXE5TORHMQ434M0H7FKB4RCBDO6X
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h58m25s.524
RA (top/left)	10h08m13s.699
RA (top/right)	09h54m43s.366
RA (bottom/right)	09h48m36s.114
RA (bottom/left)	10h01m52s.335

Dec (center)	+69°09′21″.86
Dec (top/left)	+69°07′05″.11
Dec (top/right)	+69°58′04″.46
Dec (bottom/right)	+69°09′32″.47
Dec (bottom/left)	+68°20′22″.51

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The M81 Group

The M81 Group

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Image Index:

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The M81 Group

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