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Formation of the Earth-Moon system

Published online by Cambridge University Press:  13 January 2020

Sergei I. Ipatov Open the ORCID record for Sergei I. Ipatov [Opens in a new window]
Sergei I. Ipatov*
Affiliation:
Vernadsky Institute of Geochemistry and Analytical Chemistry of RAS, 119991, 19 Kosygin st., Moscow, Russia, email: siipatov@hotmail.com
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Abstract

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Trans-Neptunian satellite systems and embryos of the Earth-Moon system could be formed as a result of contraction of rarefied condensations. The angular momenta of rarefied condensations needed for such formation could be acquired at collisions of condensations. The angular momentum of the present Earth-Moon system could be acquired at a collision of two rarefied condensations with a total mass not smaller than 0.1ME, where ME is the mass of the Earth. The mass of the condensation that was a parent for the embryos of the Earth and the Moon could be about 0.01ME, if we take into account the growth of the angular momentum of the embryos with growth of their masses. The Moon embryo could get by an order of magnitude more material ejected from the Earth embryo than that fell directly onto the Moon embryo.

Keywords

methods: n-body simulationsEarthMoonsolar system: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 148 - 151
Copyright
© International Astronomical Union 2020 

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