1) Fixed 
A direct, circular, low inclination orbit about the Earth having a period of 23 hours 56 minutes 4 seconds. Term applied to any equatorial satellite with an orbital velocity equal to the rotational velocity of the earth The net effect is that the satellite is virtually motionless with respect to an observer on the ground.
[adj] - of or having an orbit with a fixed period of 24 hours (although the position in the orbit may not be fixed with respect to the earth)
geosynchronous Any equatorial satellite with an orbital velocity equal to the rotational velocity of the earth resulting in a satellite that is apparently motionless for any observer on the earth. A geosynchronous satellite has an orbit similar to a geostationary one, except that it does not necessarily lie in the earth's equatorial plane.
Also referred to as 'geostationary'
adjective of or having an orbit with a fixed period of 24 hours (although the position in the orbit may not be fixed with respect to the earth)
of or having an orbit with a fixed period of 24 hours