Arp 39 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: NGC 1347

Arp 39

This Astrobin Debut Object, also known as NGC 1347, is a faint face-on spiral located 80 million light years away in the constellation of Eridanus at a declination of -22 degrees. This magnitude 13.7 galaxy spans 1.4 arc-minutes in our apparent view, which corresponds to a diameter of 35,000 light years. This galaxy was classified by Dr. Arp into the category of Spiral Galaxies with Low Surface Brightness Companions on Arms.

NGC 1347 has amazing structure for being such a small galaxy. A clear spiral structure is seen along with star clusters in the outer disk.

There is no distance data for the companion, MCG-04-09-017b. But if it were at the same distance as NGC 1347, this “companion” would be less than 10,000 light years in diameter. I have never seen a yellowish galaxy with core and structure to be that small. So I am confident that this small galaxy is not a companion but is a distant galaxy, much larger in actual size than NGC 1347.

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Status	Advanced success
Started	...
Astrometry.net job	4299142
PixInsight job	EFBX4JHEX3TO29BKG646IJ9K370QH8F4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h29m41s.794
RA (top/left)	03h30m17s.840
RA (top/right)	03h29m03s.956
RA (bottom/right)	03h29m05s.673
RA (bottom/left)	03h30m19s.696

Dec (center)	-22°16′43″.76
Dec (top/left)	-22°09′44″.24
Dec (top/right)	-22°10′16″.16
Dec (bottom/right)	-22°23′42″.94
Dec (bottom/left)	-22°23′10″.79

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