Lines Matching full:variation
1089 // Annual Eqn: variation in the effect due to earth-sun distance
1113 // And finally, find the variation, caused by the fact that the sun's
1117 double variation = 0.6583*CalendarAstronomer::PI/180 * ::sin(2*(moonLongitude - sunLongitude));
1119 moonLongitude += variation;
