  The dynamically cold component of the Kuiper Belt is host to a population of
very widely separated, near-equal mass binary systems. Such binaries,
representing the tail of the separation distribution of the more common, more
tightly-bound systems, are known to have on-sky separations up to ~4". Their
wide separations make them highly valuable due to their delicacy and
sensitivity to perturbation, and also makes them relatively easy targets to
characterize from the ground. Parker et al. (2011) present a ground-based
characterization of seven such systems with separations at discovery ranging
from 0."5-4", and we will adopt these systems as the prototypes for the
ultra-wide binaries of the Kuiper Belt. Here we present the prospects for using
future large-scale ground-based optical surveys (with LSST as our baseline
survey) to measure the orbital properties of a large sample of these widely
separated Trans-Neptunian Binaries (TNBs).
