|Out of universe information|
Mentioned in "Into the Fire"
P3X-254 is a planet in the Milky Way Galaxy. In 1999, SG-3 was sent to this planet on a routine mission. While there, Colonel Robert Makepeace was approached by several members of the Tok'ra and told that SG-1 had been captured by Hathor. The Tok'ra gave him his colleagues' location. (SG1: "Into the Fire")