The Valakis system was an inhabited planetary system in the Alpha Quadrant. A planet in this system, Valakis, was the homeworld of the Menk and Valakians.
In 2259, Valakis' location was labeled on a stellar cartography chart that was seen on the USS Enterprise's ready room viewscreen. This system's symbol had a blue color, indicating that it was affiliated with the United Federation of Planets. (SNW: "A Quality of Mercy")
The system's location was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters in 2399 and on the bridge of the USS Titan-A in 2401. The Valakis system was in or near to Federation space. (PIC: "Maps and Legends", "The Next Generation", "Disengage")
In 2401, this planet's position was labeled on a star chart used by Captain William T. Riker during his attempt at finding the last known location of the SS Eleos XII. (PIC: "The Next Generation")
This star system was only mentioned in writing.
The name of this system came from the source material used, the Star Trek: Star Charts and Stellar Cartography: The Starfleet Reference Library, to create the star charts seen in Star Trek: Picard and "Strange New Worlds".
According to Star Trek: Star Charts (p. 60) and Stellar Cartography: The Starfleet Reference Library ("Beta Quadrant: Local Space Extract"), this system was a trinary system with a K-class star accompanied by two G-class stars. Sometime between September 15 and October 1, 2151, the NX-class starship Enterprise visited this system.