Satellite Orbital Speed Around Earth

If you know the satellite s speed and the radius at which it orbits you can figure out its period.
Satellite orbital speed around earth. The extremely stable fourth and fifth lagrange points are in earth s orbital path around the sun 60 degrees ahead of and behind earth. In gravitationally bound systems the orbital speed of an astronomical body or object e g. This equation holds for any orbiting object where the attraction is the force of gravity whether it s a human made satellite orbiting the earth or the earth orbiting the sun. The dscovr earth science instruments will be the very first looking at the earth from the l1 point and will observe the whole sunlit earth from sunrise to sunset compared with a microscopic view from low orbits.
Planet moon artificial satellite spacecraft or star is the speed at which it orbits around either the barycenter or if one object is much more massive than the other bodies in the system its speed relative to the center of mass of the most massive body. The third lagrange point is opposite the earth on the other side of the sun so that the sun is always between it and earth. From equation 3 the fundamental form of orbital velocity equation we get an equation of nearby orbit s orb. Since earth also rotates once in 24 hours a satellite at 22 223 miles altitude stays in a fixed position relative to a point on earth s surface.
The term can be used to refer to either. The speed can t vary as long as the satellite has a constant orbital radius that is as long as it s going around in circles. A satellite in this position would not be able to communicate with earth. The period of the earth as it travels around the sun is one year.
Other nasa satellites have used the l1 position for orbit but this is the first time a noaa satellite will orbit in l1. That orbital speed and distance permit the satellite to make one revolution in 24 hours. There is a large variety of other sources that define leo in terms of. Now if the height of the satellite h from the surface of the earth is negligible with respect to the radius of the earth then we can write r r h r as h is negligible.
A low earth orbit leo is an earth centred orbit with an altitude of 2 000 km 1 200 mi or less approximately one third of the radius of earth or with at least 11 25 periods per day an orbital period of 128 minutes or less and an eccentricity less than 0 25.