[taotau]

Aside from the logistics and energy requirements of controlling the trajectory of something that weighs 10^24 kg, I wouldnt trust anyone alive on earth to be able to work out a stable orbit that wouldnt impact the delicate existing balance of our solar system. Something that massive would change the orbits of earth, mars, venus, even jupiter to a certain extent, not to mention all the asteroids and comets. The current stable configuration of the solar system was surely a significant contributor to the evolution of life, and it probably just came about as a freak accident. No way I would vote to allow anyone to mess with it on this scale.