L-5 Colonies

The L-5 Colonies were Earth colonies, co-orbital with Earth, located at the Lagrange points ahead and behind of the planet.

The six extant in the mid-21st century were created from the fragments of an asteroid that was diverted from striking Earth by a consortium of nations in 2031. 

The six original colonies were:


 * Vanguard colony
 * Colony Roykirk
 * the Moss-Offenhouse colony
 * the NicholCorps facility
 * the Brynner asteroid
 * the Starling Habitat

In cooperation with Zefram Cochrane, those colonies participated in a test of a stable subspace field in 2058. However, due to an unknown factor, all six disappeared and were presumed destroyed. (The Sundered)

By the 23rd century, other colonies were constructed at the Lagrange points. One, L-5 Colony Two, was the home of Asimov University. 

Two officers who served on USS Avenger at different times, Kate Dimick-Brown and Gretchen Benteen, were residents of L-5 Colony Two. (Star Trek: Avenger: "Nearly a Valediction")