

The total number of formal member worlds was over one hundred and fifty in the 24th century. One of the most powerful interstellar states in known space, it encompassed eight thousand light years.

Additional nomenclature used to describe the Federation included: " Earth Federation" in TOS: " Friday's Child" and TAS: " The Lorelei Signal", " Federation of Planets" in TOS: " A Piece of the Action", and " United Fleet of Planets" (incorrectly, by Lokai of the planet Cheron) in TOS: " Let That Be Your Last Battlefield".
