Planet located on the outer edge of the Pegasus Galaxy. This world is in relative proximity to M4F-788, home to the first planet in the intergalactic gate bridge's chain of Stargates that stretched from Pegasus to the Midway Space Station (and from there to Earth).
After the Wraith took control of the Stargate on 788, Dr. Rodney McKay rewrote the macro that controlled the gate bridge's automated dialing sequence – using M6R-125 instead. This world was selected because . This allowed Atlantis to regain access to the bridge and Midway Station.
M6R-125 is in the Ancient database in Atlantis.
HOME TO - Unknown
FIRST APPEARED - Midway
Midway - After the Wraith hack into the Stargate bridge on M4F-788, Rodney McKay reprograms his macro to dial M6R-125 instead – circumventing the planet.