Dynamical evolution of Chelyabinsk-type bodies from sungrazing orbits to near-Earth space
作者： V.V. Emel’yanenko
DOI: 10.1016/J.PSS.2015.08.005
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摘要: Abstract Studies of the orbital evolution show that, with a high probability, Chelyabinsk object was near Sun about 1 Myr ago. This is consistent estimate cosmic ray exposure age ( Popova et al., 2013 ). Dynamical features flux Chelyabinsk-type bodies have been studied by numerical integrations, assuming their origin The most frequent fate these solar collision. But quarter all original objects survive until present epoch. majority surviving are typical near-Earth objects. rate encounters Earth almost constant for last 0.5 Myr. About third approach from direction.
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