The design of the Asteroid Redirect Mission or a similar mission depends significantly on the properties of the target, namely its mass, size, density, internal cohesiveness, spin state, surface rough-ness, presence/ absence of regolith and so forth. In the ideal case, mission planners will have complete information on the target's characteristics before launch. However, the near-Earth asteroids in the appropriate size range, which we will refer to as Very Small Asteroids or VSAs, are particularly difficult to characterize. They are faint and spend only a short time (typically days) within easy reach of Earth-based telescopes when they are first discovered, often not returning to the Earth's vicinity for several years.