The recently discovered planetoid Sedna, is reported to have a diameter of 1609 km. If this body is a natural gravitational accumulation of matter, (and not the remains of a larger body that has disintegrated), then its mass will conform to (2.4). Accordingly, the mass of Sedna is estimated as 4.21E24 grms. Comparison with the data presented in Appendix B(ii), shows Sedna to be the smallest body in the Solar System apart from the Asteroids and Comets.

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