The study of Lost Minor Planets and the precarious nature of an Observation Arc reveals that our solar system is not a perfectly mapped clockwork model but an incredibly messy ledger of moving targets. In this episode of pplpod, we explore the terrifying reality of missing celestial bodies and the role of Near-Earth Objects in the high-stakes game of Planetary Defense, utilizing the Palermo Scale to measure the destructive potential of Non-gravitational Forces acting upon comets and space debris. We begin our investigation with the staggering statistic that of the 700,000 minor planets cataloged, over 150,000 remain entirely missing because their locations are too uncertain to target with a hyper-focused telescope looking at the  ...