Regarding USA 129's recent manoeuvre, Jeffrey Lewis asked: > Given the resulting ground track, is it plausible that we > would have moved the KH-12? No. The KeyHoles only manoeuvre to maintain their orbits against the perturbing effects of drag and solar gravity, and to maintain the phasing of their ground tracks relative one another within certain limits. The orbits of the two primary KeyHoles are spaced in such a way as to provide frequent repeat coverage, without need of special manoeuvres to station-keep with their observation targets. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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