LV-1201 (Earth-5875)

LV-1201 is an uncharted moon in a distant region to space that lie beyond the most distant human Outer Colonies. It was formerly under the control of the forerunners in 100,000 years in the past, where they established Line Installation 1-4.

History
In August 1st, 2552, during the First Contact War, the UNSC Long Time Coming and the Covenant CAS-assault carrier Clarity of Faith crashed on the moon after their systems were disabled by the weapons of Line Installation 1-4 while traveling in slipspace. Their personnel were taken by the installation's Gatherer Sentinels and brought to the main facility of Line Installation 1-4 to be studied and dissected by the Monitor 686 Ebullient Prism. SPARTAN-II Black Team were able to escape and destroy the Monitor, as well as the stranded Covenant forces.