Thomas Dorman > Does any one know where I can find up-dated TLe for > TiPs... The old TLE for TiPS from April 9 show several high > passes for my location from May 1st to May 8th... On these > passes I hope to image TiPS... I am not aware of more recent elsets; however, assuming 25 percent uncertainty in rate of decay, prediction time uncertainty would be about 10 s. Also affecting accuracy is a perturbation of quasi 63.4 deg orbits that causes eccentricity to slowly increase, that is not modelled by SGP4. Unless your FOV is tiny, these should not pose too much of a problem. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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