Planetoid approximately 42 thousand light years from Earth, home to an indigenous species of "light aliens." The moon is primarily deciduous with several large spots of rock, perfect for colonization. The S.G.C. maintained a base on this world for some time until the mysterious fireflies drove the team off the planet, leaving several intact facilities and equipment.
The moon has an unusual magnetic polarity which might be responsible for the hostility of the light creatures. Either this or they retaliated against the capture of one of their own.
Prodigy - Following an attack of vicious light aliens, SG-1 evacuates the M4C-862 science team.