>Reasons for inclusion >(13) evaluating 13th-order harmonics in E.g.f. at resonance >(14) evaluating 14th-order harmonics in E.g.f. at resonance >(15) evaluating 15th-order harmonics in E.g.f. at resonance >(29) evaluating 29th-order harmonics in E.g.f. at resonance Why are these orders singled out for study? It seems that a satellite orbit could have a resonance with other higher order harmonics eg 27th and possibly 31st. Richard Clark rclark@lpl.arizona.edu