When two bodies in a plasma come close to each other, the local electrical/plasma environment becomes altered by their mutual influence. A well-studied example is two dust grains that get within a Debye length of each other: they effectively merge plasma sheaths to create a mutual change in their charge states and relative potentials. Recently, the interaction of small objects placed on or near substantially larger objects, like an astronaut roving on the Moon, has also been examined. It was found that the small object’s electrical potential is modified while within the larger object’s sheath and low density wake. We now consider the problem of two objects of ~5-10-m size in the solar wind moving into proximity of each other to determine the mutual electrical-plasma influence each exerts on the other. We will also consider the case when one object is a human system that is outgassing (releasing water) and creating a local ionosphere. This spacecraft ionosphere should affect the other body by creating an electrical current between the two systems, and the nature of this current and affect on both bodies will be discussed. While we present general case studies, the applications are directed toward the ARM where a spacecraft is expected to bag a ~7-m asteroid and return it to lunar orbit. We suggest that there will be at least three types of object-object plasma interactions to consider: 1) spacecraft-asteroid interaction in the retrieval process, 2) a Moon-asteroid interaction once the body is on orbit at the Moon (as the asteroid passes through the plasma-depleted lunar wake) and 3) an Orion-asteroid(-Moon) interaction when humans visit.