Dwarf spiral NGC 5474 (lowenthalm)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 5474 · PGC 2448110

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Dwarf spiral NGC 5474

Acquisition type: Lucky imaging

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Dwarf spiral NGC 5474

Acquisition type: Lucky imaging

This galaxy is a small companion of nearby M101. Its the same distance from us as M101, but only about 1/10 its diameter, which puts it at about 15,000 ly across. Its somewhere between an irregular and a spiral, being a classified as a "peculiar" dwarf spiral, which is tidally distorted by the much more massive M101. It rich in intensely blue O-B stellar associations and has only a single broad spiral arm (or maybe three nearly merged spiral arms, depending on your definition of an arm?) surrounded by a much fainter outer halo than has many more smaller and dimmer O-B stellar associations.

Being so nearby its much larger and more famous friend, it seems to be overlooked for the most part. This is too bad, as I think its quite an interesting object.

Each of the five 8 minute live-stacks that were combined to produce this image were themselves a stack of 130 three second exposures that were live-stacked in SharpCap.

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Status	Advanced success
Started	...
Astrometry.net job	3452952
PixInsight job	DZVB8FO8BENGMEH10TQ2SAGTQIPPFQCY
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h05m02s.783
RA (top/left)	14h03m25s.108
RA (top/right)	14h05m24s.762
RA (bottom/right)	14h06m40s.304
RA (bottom/left)	14h04m40s.537

Dec (center)	+53°39′36″.31
Dec (top/left)	+53°41′44″.72
Dec (top/right)	+53°25′20″.89
Dec (bottom/right)	+53°37′22″.65
Dec (bottom/left)	+53°53′50″.66

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Dwarf spiral NGC 5474

Dwarf spiral NGC 5474

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Dwarf spiral NGC 5474

Dwarf spiral NGC 5474

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