M6R-867
From The Stargate Omnipedia
Planet in the Pegasus Galaxy almost entirely leveled, likely by a Wraith assault, and never rebuilt. Several warehouses are still intact.
Ladon Radim used 867 as his home base to mount an assault on the current Genii government under Chief Cowen, who believed he was in on the plan.
DETAILS
HOME TO - Uninhabited
FIRST APPEARED - Coup D'etat
KEY EPISODE
Coup D'etat - Colonel Sheppard leads a raiding party to M6R-867 to steal a Zero Point Module from Ladon Radim and his renegades.