Paper:	Formation of Terrestrial Planets from Protoplanets: Statistics of Planetary Spin
Volume:	398, Extreme Solar Systems
Page:	261
Authors:	Kokubo, E.; Ida, S.
Abstract:	We statistically investigate the spin parameters of terrestrial planets assembled from protoplanets using N-body simulations. We find that the obliquity of the planets is well expressed by an isotropic distribution. The typical spin angular velocity is given by the critical spin angular velocity for rotational instability under the assumption of perfect accretion in collisions.

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