VValeryOchkov24-Ruby IVForum|Forum|11 years agoFebruary 26, 2015QuestionCase 7: Earth and Satellite Or Kepler's clockForum|Forum|11 years agoFebruary 26, 20151 reply3093 viewsWith Kepler's 2-d laws of planetary motionSee pleaseKepler's laws of planetary motion - Wikipedia, the free encyclopediaPS One more idea for Mathcad-clockOld Mathcad-clock - Re: Mathcad-clock for Windows1_Earth-Sat-mcdx.zipOther