This world would have served as the platform for detecting Goa'uld vessels that would pass this planet en route to Earth. Whether at sub-light or hyperspace velocities, the Seeker Project would ensure Goa'uld vessels would be detected long before they reached the Earth's solar system.
Logically, this world contains a Stargate to transmit the warning back.
HOME TO - Unknown
FIRST APPEARED - N/A
Thor's Chariot - Carter suggests P5C-629 as a good candidate for the Seeker Project, since the world falls into the corridor the Goa'uld use to reach Earth.