Lunar theory adjusted to DE404 ephemeris; size 30KB
According to JPL's DE404 long ephemeris, in 3000 B.C. the Moon was a large fraction of a degree away from where DE200 says it was. This version of cmoon.c adjusts the ELP2000-85 analytical Lunar theory of Chapront-Touze and Chapront to fit the new JPL ephemeris on the interval from 3000 B.C. to 3000 A.D. with a precision of about 0.1 arc minute. Note, for dates more recent than 1300 B.C. the ephemeris in aa-56.zip (see above) is about an order of magnitude more precise. This archive also includes a second program that extends the ELP2000-85 analytical lunar theory to cover a 22,000-year interval centered at J2000, based on the DE200 physics model. Last change: 2002-07-08.
cmoon.zip