Doraf I was the uninhabited first planet in its system. This planet was a candidate for terraforming in the 2360s.

In 2368, the USS Enterprise-D was scheduled to undertake a terraforming mission at Doraf I, but the mission was canceled and the ship recalled to Starbase 234 by Fleet Admiral Brackett. (TNG: "Unification I")

This planet was only mentioned in dialogue.
The Star Trek Encyclopedia (4th ed., vol. 1, p. 216) located this planet in Federation space.
According to the Star Trek: Star Charts ("United Federation of Planets"), Doraf I was listed as a member planet of the Federation in 2378.

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