Chi Leonis, also known as 63 Leonis, was a star system in the Beta Quadrant.
Components
Stellar system
This was a binary star system consisting of the stars Chi Leonis A and Chi Leonis B. The primary Chi Leonis A was a F-type giant.
History
In 2257, during the first Federation-Klingon War, this system was occupied by the Klingons. (DIS: "The War Without, The War Within")
When the Venari Ral laid Omega-47 mines around the core of Federation space in 3196, this system was within the enclosed region. (SA: "300th Night", "Rubincon")
Stellar cartography
The Chi Leonis system was located in the constellation Leo. This system was approximately 95 light years from Sol.
In the 2150s, this system's position was labeled on an United Earth star chart which was displayed in several crew and guest quarters aboard the Enterprise. (Star Trek: Enterprise, set decoration))
In 2256, the system's location was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the USS Discovery. (DIS: "Magic to Make the Sanest Man Go Mad")
In 3196, during the All-Worlds Day break, the location of Chi Leonis was depicted on a star chart on the main viewscreen of the USS Athena. (SA: "Ko'Zeine")
In 3196, during the Omega-47 crisis, the location of Chi Leonis was depicted on star charts and readouts used across several locations on the USS Athena to locate, monitor, and respond to the Omega-47 mines laid by the Venari Ral. (SA: "300th Night", "Rubincon")