Murison again continued his investigations into the problem of extracting orbital parameters of a body from incomplete state vector observations (with errors) made from an orbiting platform. This is in support of SAA ("Space Situational Awareness") issues involving the MAPS and FTS projects. Murison has found that approximations at one extreme (mostly transverse relative motion) — a geosynchronous object viewed from a LEO craft — can lead to parameter error estimates, though the relations are predictably complex. The other extreme (large radial component to the relative motion) — LEO and transfer orbits viewed from LEO — do not admit any useful approximations that can be exploited. The partial derivatives of the equations (both full and approximate), to be used in upcoming numerical nonlinear parameter estimation studies, have been calculated. Murison also found connections between this problem and his ongoing work on the orbit-orbit distance problem.

Murison compiled a nearly-complete list of satellite capture references.

Murison continued assisting in the development of AA's new web site.

Murison continued his duties as Secretary of the AAS Division on Dynamical Astronomy, helping the LOC with various tasks in preparation for the 2006 DDA meeting.