P8X-873 is a planet of open grassy plains. When Amaunet returned to Abydos to steal away the Harsesis child and send him into hiding, she captured Abydonians as slaves and held them on P8X-873 so that Heru'ur would not know that her true purpose was to find the boy. As SG-1 battled Amaunet's Jaffa and freed the prisoners, Amaunet confronted Daniel and held him in the grip of her ribbon device until she and her host, Sha're, were killed by Teal'c to save Daniel's life.
Cross Reference: Amaunet, Kasuf, Sha're
Episode Reference: Forever in a Day