Tharkoros VII
From Transformers Wiki
Tharkoros VII has orbital ring cities, which Gears regards as a magnificent feat of engineering.
Fiction
Classified novels
Gears told his friend Kevin Bowman he favored Tharkoros VII, though his preferred choice of destination would be Cybertron prior to the war. Switching Gears
The AllSpark Almanac
Tharkoros VII was a neutral robotic planet in the Milky Way. The Complete AllSpark Almanac