Hello! I'm working on a computer project dealing with Satellites and I need a quick way to figure out a satellites APOGEE height above the earths surface from the TLE files I get off of seds.arizona/archive.afit, i have the perigee formula but this isnt quite as usefull as the apoge forumla! thanks in advance! Marek progrmer@max.tiac.net http://www.cs.brandeis.edu/~progrmer