Originally posted by JohnMartin
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1) onboard fuel to position the satellite
2) an induced rotation of 24 hours for a geosynchronous satellite on an axis parallel to the Earth's pole
3) gyroscopes
4) magnetic feedback against the earths magnetic field
5) a large mass extended from the satellite making use of the tidal force
6) multiple sensors and/or position gimbals
etc and/or any combination of the above
https://en.wikipedia.org/wiki/Attitude_control
Jim
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