Comet 9P/Tempel 1 Ephemeris Development for the Deep Impact Mission (AAS 06-178)
Near Earth Objects: Orbit Determination and Impact Prediction
Mission Design for a Kinetic-Energy Asteroid-Deflection Spacecraft
The Orbital Dynamics Environment of 433 Eros (AAS 01-373)
Navigation Challenges of a Kinetic Energy Asteroid Deflection Spacecraft
Orbit Determination and Estimation of Impact Probability for Near Earth Objects (AAS 99-002)