Rick determines the sex robot stems from a planet in the "Andromeda system". There is no star (system) named Andromeda though, only a constellation and a whole galaxy by that name. However, given that the series routinely deals with unexplored alternate dimensions and numerous universes, but Rick has an encyclopedic knowledge of, it is quite possible for him to know of an "Andromeda System" of which humanity native to this universe are not aware.