Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197.1031s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 197, Dec. 1981, p. 1031-1047.
Astronomy and Astrophysics
Astronomy
10
Angular Momentum, Computerized Simulation, Earth-Moon System, Lunar Evolution, Particle Interactions, Planetary Evolution, Astronomical Models, Coordinates, Kepler Laws, Kinetic Energy, Particle Motion, Particle Trajectories, Earth, Moon, Formation, Origin, Gravity Effects, Accretion, Distance, Dust, Numerical Methods, Parameters, Fission, Earth-Moon System, Models, Particles, Timescale, Angular Momentum, Kinetic Energy, Trajectories, Calculations, Radius
Scientific paper
The formation of the earth by accretion from a uniform Keplerian dust disk is numerically investigated, with particular reference to the consequences of particle interactions within the planetary sphere of influence. For a given set of parameter values a planet of earth mass is seen to form in a short time with a prograde angular momentum of magnitude close to the present-day earth-moon system. Furthermore the planet passed through a rotationally unstable phase which would result in fission into two parts, the smaller being of near lunar mass.
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