Prakiti

P3-575 (also known as P3A-575) is a planet, one of the first (apart from Abydos and Chulak) visited by Humans from Earth.

P3-575 was one of the planets selected by General Hammond for SG-1 to travel to. After discovering that Kawalsky was harboring a Goa'uld and was killed, SG-1 proceeded to P3-575. (SG1: "The Enemy Within")