From The Stargate Omnipedia
Planet nearby the Sodan homeworld, designated P9G-844 by Stargate Command. The neighboring world is likely relatively near to the Sodan in space, and has its own Stargate. It is also likely to be populated, as the Sodan occasionally sent its people there to acquire supplies.
It was here that Volnek was accosted by an Ori Prior, who used his staff to infect him with an illness that transformed him into a vicious killer.
There is no evidence that this world has been visited by a team from Earth.
HOME TO - Unknown
FIRST APPEARED - Arthur's Mantle
Arthur's Mantle - While on a neighboring world Volnek encounters an Ori Prior, who punishes him for the Sodan's betrayal.