This
Astrobin Debut Object is a face-on blue
low surface brightness galaxy located 75 million light years away in the constellation of Cetus at a declination of -12 degrees. In his
Arp catalog, Dr. Arp classified this object into the category of Spiral Galaxies with Low Surface Brightness.
This magnitude 14 galaxy, also known as LEDA 6626, spans 2 arc-minutes in our apparent view, which corresponds to a diameter of 50,000 light years. This small galaxy falls into that interesting size range between 25,000 and 50,000 light years, where I see so many galaxies that I call
Irregular Spirals. They seem to me to be galaxies that are in transition from irregular to spiral shape.
The “companion” here, the small face-on spiral LEDA 6629, is not a true companion. It is located 10 times further away at 660 million light years. Its actual size is much bigger at 110,000 light years.
There is another fake “companion” on the opposite side of Arp 4. No distance data is available for this tiny galaxy, LEDA 953858, but it looks to be distant.
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