Solar System Astrophysics Background Science And The Inner Solar System Astronomy And Astrophysics Library V1 -

tests of general relativity wikipedia - under newtonian physics a two body system consisting of a lone object orbiting a spherical mass would trace out an ellipse with the center of mass of the system at a focus the point of closest approach called the periapsis or because the central body in the solar system is the sun perihelion is fixed a number of effects in the solar system cause the perihelia of planets to precess, reference guide a companion to acp observatory control - div class toolbar macro toolbar toolbarcommands viewtoolbar div div class title macro view title div div class subtitle span macro