On the Initial Distance of the Moon Forming in the Circumterrestrial Swarm

Abstract

According to the Radzievskij-Artemjev hypothesis of the ‘locked’ revolution of the circumplanetary swarms around the Sun, the initial Moon-to-Earth distance and the angular momentum acquired by the Earth through the accretion of the inner part of the swarm can be evaluated. Depending on the concentration of the density to the centre of the swarm we obtain the initial distance for a single protomoon in the range 15–26 Earth radii R and for a system of 3–4 protomoons in the range 3–78 R, if the outer boundary of the swarm equals to the radius of the Hill’s sphere (235 R). The total angular momentum acquired by the primitive Earth-Moon system through the accretion of the swarm particles is $\frac{1} {2} - \frac{2} {3}$ of its present value. The rest of it should be acquired from the direct accretion of interplanetary particles by the Earth. The contribution of satellite swarms into the rotation of other planets is relatively less.