Forgive my multiple nerdgasm, but another weird thing: let’s say for the sake of argument that this asteroid/meteroid/whatever somehow came to this point and wasn’t going anywhere…for all intents and purposes in orbit. An object that massive would have its own gravity –albiet a miniscule one compared to the Earth’s– and therefore there should be a Lagrange point somewhere between it and the ground, probably only a yard or so from the asteroid’s surface. Anything placed there would just hover indefinitely, due to the cancellation of respective gravities.