This Unnamed Galaxy was approximately 4 million light years away from the Milky Way. SG-1 accidentally traveled here when their hyperspace route was interrupted after destroying a sun. It was known to have had at least one ship equipped with beam weapons and shield in it, and a population of Replicators. (SG1: "Enemies")

The presence of Replicators and the distance of 4 million light years both suggest this may have been the Ida Galaxy.