NGC 1343 (Gary Imm)

NGC 1343

This rarely imaged object is an interacting pair of galaxies located in the constellation of Cassiopeia at a declination of +72 degrees. NGC 1343 is the main galaxy and ZOAG G134.74+13.65 is the dwarf companion to the upper left.

It is disappointing that there is little information out there on this wonderful object, and what I did find appears to be wrong. SIMBAD gives the distance as only 14 million light years, which cannot be correct since it results in an extremely small galaxy diameter of 10,000 light years. My guess is that NGC 1343 is about 100 million light years away, which would put the diameter at 75,000 light years.

The structure of this galaxy is fascinating to me. The inner ring around the core is bright and almost exactly circular. The ring connects to the core at the upper left, where there is also a slight gap where the ring goes almost completely around the core but does not quite close the loop.

The outer disk is a faint horizontal oval which contains within it a slightly brighter S-shaped arm structure, with faint but visible star clusters towards the end of each arm. The clusters are slightly dimmer on the left side, where the disk connects through a faint star stream bridge to a dwarf companion galaxy (ZOAG G134.74+13.65). Despite this gravitational influence, I do not see much visible distortion in the disk of NGC 1343.

The circular inner ring shape suggests to me that we are looking at this galaxy face-on, so it is interesting to me that the outer disk is in such a strong oval shape and not apparently circular as well.

This is the first image of this object on Astrobin.

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Status	Advanced success
Started	...
Astrometry.net job	3222954
PixInsight job	VL26TTY3FLUY7GPOERH0ZW7U1Y3TXZSP
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h37m49s.665
RA (top/left)	03h40m05s.364
RA (top/right)	03h34m53s.113
RA (bottom/right)	03h35m36s.699
RA (bottom/left)	03h40m43s.966

Dec (center)	+72°34′12″.87
Dec (top/left)	+72°45′06″.23
Dec (top/right)	+72°41′04″.12
Dec (bottom/right)	+72°23′13″.81
Dec (bottom/left)	+72°27′12″.90

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