Page 5 of this FCC filing indicates 3.5 million square kilometers, BUT that's assuming 1,150km altitude: https://cdn3.vox-cdn.com/uploads/chorus_asset/file/8174

Page 5 of this FCC filing indicates 3.5 million square kilometers, BUT that's assuming 1,150km altitude: https://cdn3.vox-cdn.com/uploads/chorus_asset/file/8174403/SpaceX_Application_-.0.pdf https://cdn3.vox-cdn.com/uploads/chorus_asset/file/8174403/S... But that may provide some information you find interesting. Edit: this previous HN discussion also touches on this: https://news.ycombinator.com/item?id=21325720 https://news.ycombinator.com/item?id=21325720