NGC 3917 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3917 · PGC 213886 · PGC 213888 · PGC 2398810 · PGC 2399182 · PGC 2402241 · PGC 2402633 · PGC 36973

NGC 3917

This Astrobin Debut Object is a spiral galaxy located 55 million light years away in the constellation of Ursa Major at a declination of +52 degrees. It is a magnitude 12 galaxy which spans 5 arc-minutes in our apparent view. This corresponds to a diameter of 90,000 light years.

From our view perspective, the disk is inclined about 10 degrees from edge-on. Dark dust lanes and blue star clouds are visible in the disk surrounding the unbarred galaxy, but the arm structure is tough to discern at this angle. It appears to be flocculent.

The smaller edge-on galaxy to the upper right is UGC 6802. This galaxy is further away at 85 million light years and is smaller at 60,000 light years in diameter.

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Astrobin Debuts (670 DSOs)
Flocculent Galaxies

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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	7714102
PixInsight job	GNZQ5T9OD5LPDWK5MQQPLCRR57Q5FVWS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h50m45s.371
RA (top/left)	11h51m51s.368
RA (top/right)	11h49m35s.789
RA (bottom/right)	11h49m39s.802
RA (bottom/left)	11h51m54s.613

Dec (center)	+51°49′30″.93
Dec (top/left)	+51°57′05″.94
Dec (top/right)	+51°56′17″.47
Dec (bottom/right)	+51°41′54″.64
Dec (bottom/left)	+51°42′42″.34

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NGC 3917

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NGC 3917

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