In article ,
Could you not have a satellite in a geostationary orbit above another line
of latitude than the equator, as long as it still rotates in a line parallel
to the equator and rotates around the earth at the same rate as the earth
spins? Or would there be a nett force dragging it towards the nearer of the
two poles - is the equator the only place for geostationary because there is
no nett force towards either pole?
The centre of a circular orbit must be the earth's centre of gravity,
so you can't have an orbit along a line of latitude.
You can have a 24 hour orbit at any orientation, so you could have a
tilted orbit that remained at the same longitude. But it would change
latitude during the day.