1984: The Hill–Brown Theory is Replaced as the Basis of the Lunar Ephemerides
Part of the Sources and Studies in the History of Mathematics and Physical Sciences book series (SHMP)
During the 1960s and until his death in August, 1971, Walter Eckert devoted his efforts to improving the precision with which the Moon’s position could be derived from the Hill–Brown theory.
KeywordsPhysical Libra Naval Observatory Lunar Theory Spacecraft Mission Optical Angle
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