Search of Most-Concerning Space Debris Objects in Low Earth Orbit

This report integrates a variety of methods to find internationally agreed list of the most dangerous space debris objects in low Earth orbits. These methods each generate different results based on diverse hypotheses and approaches. A state-of-the-art model consolidation approach was applied for the integration of these reputable models. The significance of the results of this effort is noteworthy -- 19 experts from 13 countries/organizations had their 11 individual assessments aggregated into a list of the 50 statistically-most-concerning (SMC) objects for debris generation. Upon examination of the original 11 lists, it is noted that all of them had between ~40 to 60% objects in common between some other top-list. In addition, it is also important that, even though only two of the 11 approaches specifically disregarded payloads, 39 of the top 50 SMC are derelict rocket bodies; only 11 are non-operational payloads.