The disclaimer was meant to say that it's just an idealized system of two masses at a given distance. I picked these values to show what speed an object orbitin

The disclaimer was meant to say that it's just an idealized system of two masses at a given distance. I picked these values to show what speed an object orbiting around a 'light' object like an asteroid approximately has. So sorry: it's not in that orbit. I should have made that clear instead of talking about the probe, circling, ... which sounds pretty concrete. (The asteroid is not spherical or homogenous and is even supposed to be a "rubble pile" with large holes inside which makes it highly questionable at best to treat it as point mass (you could if the probe were far enough away from it ... which it is not at all), but hey ... ¯\_(ツ)_/¯)