Based on my experiences with Kerbal Space Program, this object seem to be almost being pushed off from solar orbit. Given its 'small' size, how much energy would be required to push it off the solar system?
Still a no-can-do for our species currently, and it's not close.
Would need around 1km/s on top of its average orbital velocity to escape, but the mass is probably roughly in the 10^22kg range, so thats like 10^28 Joule.
Significantly more than a billion of the biggest nuclear bombs we built.
