A satellite in circular orbit is an object that orbits around a planet or other celestial body in a circular path. It is held in place by the gravitational pull of the body it is orbiting, and it maintains a constant distance and speed as it travels around the body.
A satellite maintains a circular orbit by balancing its centripetal force (the force that keeps it moving in a circular path) with the gravitational force from the body it is orbiting. This results in a stable, circular orbit.
The factors that affect a satellite's circular orbit include the mass of the body it is orbiting, the distance between the satellite and the body, and the speed of the satellite. These factors can all impact the strength of the gravitational force and the satellite's centripetal force, which determine the shape and stability of its orbit.
The altitude of a satellite can affect its circular orbit in a few different ways. A higher altitude can result in a larger orbital period (the time it takes to complete one orbit), while a lower altitude can result in a shorter orbital period. The altitude can also impact the shape of the orbit, with higher altitudes resulting in more elliptical orbits.
Satellites in circular orbit have a wide range of uses, including communication, remote sensing, navigation, and scientific research. They can be used to transmit signals, gather data and images from Earth's surface, provide precise location information, and study various aspects of our planet and the universe.