As the spacecraft goes through the fringes of the atmosphere at PERIGEE the energy loss shows up mainly as a reduced APOGEE. Thus the orbit becomes more circular until finally drag causes it to reenter the atmosphere. That is a five cent answer. Ron Lee ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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