How high is the ground in the star chain?

550 kilometers. Space Exploration Technology revealed that its communication satellite project "Star Chain" plans to build a constellation consisting of 1584 low-orbit satellites, with a height of 550 kilometers from the ground, which is more than 500 kilometers lower than the original planned orbit. Star Chain is a project of American Space Exploration Technology Company. Space Exploration Technology Company plans to build a "star chain" network in space from 2065,438+09 to 2024, of which 65,438+0.584 satellites will be deployed in low-earth orbit 550 kilometers above the earth, and the work will begin in 2020.