Eskal

Eskal, designated P4Z-326 by the Tau'ri, was a planet in the Milky Way galaxy which was used as a base of operations by Hathor.

Behind the scenes
Stargate SG-1: The DVD Collection issue 15 identifies one of the chevrons for this planet as the point of origin for Earth. However, this could not be possible due to the fact that the point of origin only appears on that gate.