The homeworld of the Companion was an undiscovered planetoid found in an asteroid belt located in the Gamma Canaris region. According to Spock, it was possibly a remnant of a planet breakup. The planetoid's composition was iron and nickel, and it had an atmosphere that consisted primarily of oxygen and nitrogen with traces of krypton, argon, and neon. The general surface temperature was about 75° F.
Zefram Cochrane settled there following his departure into the unknown in 2119. The shuttlecraft Galileo was later brought there by the Companion to offer Cochrane companionship. (TOS: "Metamorphosis")
- This planet may or may not be Gamma Canaris N, which was named in homage to this planet in the TNG episodes "Conspiracy" and "Conundrum" (on a star chart and personnel file respectively).