- periapsisinorbitaroundthemoon.Nowthrustcouldbegenerated(for“free”again)atperiapsis,progressivelyincreasingthealtitudeofapoapsis.theangulardistanceofapointinanorbitpastthepointofperiapsismeasuredindegrees.periapsisinEarthorbit;thepointinitsorbitwher...
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