IC 3100 is a member of the Virgo Cluster of galaxies, a vast grouping that is gradually moving towards the Milky Way'sLocal Group. This means that the typical redshift calculation used to estimate galactic distances is difficult to apply to IC 3100, and the distance estimate above (based on its redshift value) is likely to be highly conservative. Its true distance from the Milky Way is probably rather greater, and as a member of the Virgo Cluster its true distance may be as high as fifty million light years or more.
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