Q in the solar system

摘要: Abstract Secular changes brought about by tidal friction in the solar system are reviewed. The presence or absence of specific is used to bound values Q (the dissipation function) appropriate for planets and satellites. It shown that separate sharply into two groups. Values range from 10 500 found terrestrial satellites major planets. On other hand, always larger than 6 × 4 . Estimates atmospheres Jovian lead which consistent with those we have calculated on basis secular satellites' orbits. However, it difficult reconcile these large 's much smaller obtained laboratory tests solids. Lyttleton's hypothesis Pluto an escaped satellite Neptune critically examined. Using obtain their satellites, show any eccentricity Triton's orbit may possessed after a near encounter would been subsequently damped, thus accounting its present near-circular orbit.