Positioning of the artificial satellite

[aqua_s]

how is an artificial satellite set on an orbit around the earth?

 

[DaveC426913]

how is an artificial satellite set on an orbit around the earth?

Well, a rocket.

Can you be more specific?

 

[Astronuc]

how is an artificial satellite set on an orbit around the earth?

As DaveC mentioned a rocket is used to 1) lift a satellite radially in the gravitational field, and 2) increase it's azimuthal (centrifugal) velocity. The energy and angular momentum of the satellited at the end of the launch trajectory has to match orbital parameters at some tanget to the desired orbit. A satellite can be maneuvered with thrusters, but bascially, it is a matter of achieving the right orbital parameters for given orbit.

See some basic mechanics here -
http://hyperphysics.phy-astr.gsu.edu/hbase/orbit.html

 

[russ_watters]

If the question is intended to be asking how specific orbits are picked, they are based on the purpose of the satellite. Ie, a DirecTV satellite needs to be stationary so that people can point their dishes at it, so they locate the satellites in geostationary orbit. GPS needs several satellites in different locations to give a position, so they use a constellation of around 24 satellites going in different directions to keep a few in view at all times.

 

[aqua_s]

thnku for all the answers :-)