Continuous prediction of spartan visibility from orbiter over modeled free-flight mission
Joseph C. King, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
National Aeronautics and Space Administration, Scientific and Technical Information Office, 1987 - Science - 16 pages
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albedo integration element arctan Axis Systems Azim azimuth basic directions defining celestial sphere center to earth Continuous Prediction cos5j day number defined directional intensity direction along orbit earth albedo element earth albedo zone earth center Element-to-Spartan line Equations 22 f Spartan Face Normals fj found by solving free-flying objects need Geometric Relationships illumination of Spartan index identifying involve a number Julian Date luminous flux luminous intensity Modeled Free-Flight Mission NASA Negative Velocity Vector node of orbit objects optically optical tracking orbit period orbital longitude orbital revolution number Orbiter Over Modeled Orbiter star trackers Performing Organization Pitch Roll Pitch Prediction of Spartan radius revolution number Spartan right ascension Roll Pitch Roll Rotation Axis separation distance sin5 solving the oblique Spartan attitude program Spartan face normal Spartan position vector Spartan Reflector Model Spartan Visibility spherical triangle Sun line Table third stellar magnitude time-dependent directions unit vector Visibility From Orbiter