Velocity distribution of larger meteoroids and small asteroids impacting Earth
Esther Drolshagen, Theresa Ott, Detlef Koschny, Gerhard Drolshagen,, Anna Kristiane Schmidt, Bj\"orn Poppe

TL;DR
This study analyzes the velocity distribution of large meteoroids and small asteroids impacting Earth using unbiased datasets, confirming their consistency with established models for smaller meteoroids.
Contribution
It provides an unbiased analysis of large object velocity distributions, validating existing models for smaller meteoroids with new data sources.
Findings
Velocity distributions agree with standard models
Large object data confirms previous velocity assumptions
Unbiased datasets support existing flux models
Abstract
Various meteor and fireball networks exist worldwide. Most data sets which include ground-based observational data of meteors are affected by biases. The larger and faster the entering meteoroid, the brighter is the produced meteor. Hence, small and slow objects often stay undetected. This bias of meteor observations towards faster meteoroids is a challenge if quantitative population and flux models are derived. In this work the velocity distribution of objects in space is analysed by using different data sets that are not affected by this velocity bias since they include only large objects, like the near-Earth object (NEO) risk list of ESA's (European Space Agency) SSA (Space Situational Awareness) near-Earth object Coordination Centre (NEOCC), and the fireballs in NASA's (National Aeronautics and Space Administration) CNEOS (Center for near-Earth object Studies) JPL (Jet Propulsion…
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