GTO (Geostationary Transfer Orbit)

A Geostationary Transfer Orbit (GTO) is an elliptical (oval-shaped) orbit used to transfer a satellite from Earth's regular orbit into a geostationary orbit, where the satellite stays fixed above one point on the equator. The GTO is an intermediary step that allows a launch vehicle to efficiently send a satellite high above Earth, then use onboard engines to circularize and position the satellite in its final geostationary orbit at about 35,786 km altitude. It's a common technique for deploying communications and weather satellites, optimizing fuel use and launch efficiency.