rootbrowseIAC-19A6session 77. Operations in Space Debris Environment, Situational AwarenessPapers1. Achievements and challenges in more than 3 years of full operation of ASPOS OKP2. Sovereign Australian Space Situational Awareness3. Launch Access to Space in the Presence of Large LEO Constellations and the Space Fence4. Design & Development of an Optimized Sensor Scheduling & Tasking Programme for Tracking Space Objects5. Making small satellites visible: Nanosat tracking and identification techniques and technologies6. Revisiting the filtering problem7. Avoiding Collisions in Space via Aerodynamically-Induced Along-Track Orbit Variations8. Value-added Services at GEO Derived from Persistent Observation9. Data fusion application for improving orbit determination and re-entry predictions10. Enhance the TLE Catalog through Sharing Machine Learning Models. metrics for defining probability of collision for on-orbit assets