This planet has no known canonical name. While the information presented in this article is canonical, the planet described lacks an official name, thus the title is conjecture.
This is an unnamed planet in Pegasus galaxy, which holds a Stargate. Ladon Radim contacted Atlantis from this planet in an effort to trade a depleted Zero Point Module for supplies he could use in his "rebellion" against Cowen. (SGA: "Coup D'etat")