 The Antlia Dwarf is separated from the small spiral/irregular galaxy NGC 3109 by only 1.18 degrees on the sky, which corresponds to a physical separation of to depending on their radial separation.The Antlia Dwarf and NGC 3109 may be actually physically bound if the distance between them is not very large.However their velocity relative to each other—43 km/s makes it questionable whether they are in fact a bound system, especially if the distance between them is closer to the upper limit—180 kpc.