P2X-887 had been a planet within Anubis's domain. Following Anubis's defeat, SG-1 and SG-3 were sent on a standard recon mission to the planet hoping that a wrist device procured from the Jaffa would lead them to a secret abandoned base and weapons. However, once the wrist device had activated a ring transporter to an underground base, SG-1 was unable to return to the planet's surface. Ba'al's forces attacked the planet, and Ba'al, recognizing from the radio chatter that SG-1 was missing, attempted to bargain with O'Neill by claiming to have captured the team. His deception failed, and SG-1 was able to escape and return to the SGC under fire. However, they reported that no technology of strategic importance had been left behind by Anubis.
Cross Reference: Ba'al
Episode Reference: Zero Hour