23 Librae

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. In 1999 an exoplanet 23 Librae b was announced orbiting 23 Lib.
The only planet in 23 Librae's habitable zone is Madrigal,Halo: The Cole Protocol - page 155 which was the location of a UNSC Outer colonyHalo: The Cole Protocol - page 13 until the Covenant arrived and glassed the planet in 2528.Halo: The Cole Protocol - page 72 Survivors of the attack fled to the Trojan Asteroids trailing the gas giant Hesiod, farther out-system. There, they joined Insurrectionists in The Rubble.Halo: The Cole Protocol - page 11 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.Halo: The Cole Protocol - page 311 However, the human inhabitants of the Rubble managed to escape on Habitat Exodus with the help of the UNSC, the and Gray Team, while the Covenant forces were completely wiped out by the Midsummer Night.
==Known Planets==
*Madrigal
*Hesiod
**The Rubble
**Metisette
==Appearances==
*Halo: The Cole Protocol 
==Sources==
Category:Planetary Systems