The L3 Colony Cluster is the general name give to the collection of space colonies that were constructed at the L3 Lagrange Point. The Gundam pilot Trowa Barton is listed as being particularly affiliated with this cluster as it was the location that Doktor S used to design and constrct the XXXG-01H Gundam Heavyarms. A straight line can be drawn from the moon to the Earth to the L3 point, but the distance from the Earth to L3 is slightly greater than from the Earth to the Moon.