Where does the majority of the Oort Cloud's estimated mass reside based on cataloging data?
Answer
Bodies larger than a kilometer across
Although the size distribution within the Oort Cloud spans from small fragments meters across up to dwarf planet sizes, the distribution of mass is heavily skewed towards the larger components. Cataloging the population suggests that approximately 90 percent or more of the total mass contained within the cloud resides in bodies that exceed one kilometer in diameter. While objects the size of Ceres or Pluto might exist, they are hypothesized to be exceedingly rare statistical anomalies. The smaller fragments contribute significantly less to the overall mass budget of the reservoir.
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