The Quadra Sigma system has four planets in orbit around a Class-G star. Both Quadra Sigma Alpha and Beta are M-Class, but colonists chose to settle on the much smaller Quadra Sigma Beta. By tapping the geothermic energy of the much larger Alpha, they were able to supply all of the energy needed for their colony. Contact with the Beta colonists has been sporadic since the entry of the Borg into the Gamma Orionis Sector Block.
- “Khitomer Vortex”: The players attempt to prevent the Borg from using a time vortex in the Quadra Sigma System to travel back in time and alter history.
- Until Season Seven: New Romulus, the system was also the original access point for “Khitomer in Stasis” [STF Ground PvE], due to the splitting of the original STF mission into separate space and ground missions with the release of Season Five: Call to Arms.
- Since Season Seven: New Romulus the system serves as in-game PvE queue marker and Foundry-door only.