KS7-535
From The Stargate Omnipedia
Frozen planet, the unintended destination of the non-corporeal Anubis (in Colonel Alexi Vaselov's body).
It is not known how long Anubis remained on this world, nor is it known how he eventually managed to escape it, later claiming several Goa'uld domains.
DETAILS
HOME TO - Uninhabited
FIRST APPEARED - Lockdown
KEY EPISODE
Lockdown - Realizing their options are few, Colonel Carter manages to redirect the last several chevrons to land Anubis in the frozen wasteland of KS7-535.