The satellite imaging experiment (SIE) is a tracking and imaging experiment conducted during the last half of 1993 (June through December). We have obtained results from a high fidelity simulation called the time-domain analysis simulation for advanced tracking (TASAT) and also from the experiment itself that demonstrate closed loop passive tracking of stars and satellites. TASAT accurately predicts the residual track error for these objects by modeling the detailed physics of tracking through the atmosphere. In particular, an `orbit' appropriate to a star or satellite, an image rendering function, atmospheric point spread functions in the presence of adaptive optics, detailed sensors with noise, and high bandwidth active control loops all combine inside TASAT in a coupled, realistic fashion to predict active and passive cross sections, atmospheric tilt and higher order degradations, and residual track errors. We will discuss the present state of the simulation, results from TASAT that are germane to the SIE, and results from the experiment itself.