23 Librae system

23 Librae (23 Lib) is a yellow dwarf star in the constellation Libra, and is about 83.7 light-years from the sun. 23 Lib has a mass of 1.05 suns and a radius of 1.25 suns.

23 Librae is orbited by at least two planets, Madrigal and Hesiod. Hesiod is the only gas giant orbiting 23 Librae. Madrigal, the only planet in 23 Librae's habitable zone, was a human Outer Colony until the Covenant arrived and glassed the planet in 2528.

History
Madrigal was colonized by humanity, serving as a thriving human colony. It was glassed by the Covenant in 2528.

Survivors of the attack fled to the Trojan Asteroids trailing the gas giant Hesiod, farther out-system. There, they joined Insurrectionists in the Rubble. Kig-Yar merchants established trade relations with the humans in the asteroids while the Covenant plotted to raise an army of Unggoy on Hesiod's moon Metisette. Both the Rubble and the Covenant installation on Metisette were destroyed in the Battle of the Rubble and the Battle of Metisette. However, the human inhabitants of the Rubble managed to escape on Habitat Exodus with the help of the UNSC Midsummer Night and Gray Team while the Covenant forces were completly wiped out by the Midsummer Night.

Known planets

 * Madrigal
 * Hesiod
 * The Rubble
 * Metisette

Trivia

 * Halo: The Cole Protocol states that Hesiod is the only gas giant in the 23 Librae system. However, as of 2014, there is at least two gas giants orbiting the star.
 * Further more, the extrasolar planet, 23 Librae b, is orbiting 23 Librae's habitable zone. This contradicts what The Cole Protocol established, which states that Madrigal is the only planet in the star's habitable zone.

List of appearances

 * Halo: The Cole Protocol