Lambda Serpentis system

Lambda Serpentis is a star system composed of a yellow G-type star, located around 38 light-years from the Sol system. Lambda Serpentis was formerly the location of at least one of the UNSC's outer colonies, a planet in the system contained the Jericho VII colony.

In 2535, the Covenant invaded the system and attacked the UNSC colony on Jericho VII. Even though the UNSC sent Spartans to help defend Jericho VII, the human defenses were overwhelmed and the Covenant glassed the planet. In 2552, a Fleet of Covenant ships was ordered to go to the Lambda Serpentis system to collect Tritium gas for their reactors in preparation to rendezvous with the Unyielding Hierophant and mass Slipspace jump to Earth, indicating that the system is now home to a Covenant refueling station at the very least.

Trivia

 * While described as having two reddish suns in The Fall of Reach, the real-world Lambda Serpentis system only has a single, yellow star.