Also, at 2m diameter, its gravity would be so low that "leaving" a probe on it would mean strapping the probe to it? That would be a funny tech demo for catchin

Also, at 2m diameter, its gravity would be so low that "leaving" a probe on it would mean strapping the probe to it? That would be a funny tech demo for catching a small rock, but if you already do that, why not put it into a stable orbit for further study?