Another thought occurred to me- the SGP4 positions are relative to the Mean Equinox of Date (or thereabouts.... ;-). If you're "un-precessing" the Sun's position to J2000, then, you're mixing apples & oranges. ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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