This
Astrobin Debut Object, also known as NGC 3290, is a spiral galaxy located 0.5 billion light years away in the constellation of Hydra at a declination of -17 degrees. This magnitude 14.5 galaxy spans 1 arc-minute in our apparent view, which corresponds to a diameter of 140,000 light years. This galaxy was classified by Dr. Arp into the category of Spiral Galaxies with Small, High Surface Brightness Companions on Arms.
Arp believed that NGC 3290 had 2 companions. To the above right is the magnitude 19 disturbed dwarf galaxy LEDA 886037, 20,000 light years in diameter. To the lower right is a small unnamed magnitude 20 galaxy, 10,000 light years in diameter. No distance information is available for either of these 2 small galaxies. The diameters estimated above assume that all 3 galaxies are the same distance away from us.
NGC 3290 is being disturbed by something, given its offset core and its extended strong galaxy arm. My opinion is that it is being disturbed by the larger above right galaxy. Based upon the fact that the smaller below right galaxy is undisturbed, I have doubts about whether that one is also a companion.
One aspect of NGC 3290 that I enjoy is the faint repeat of the strong arm structure just below.
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