TerreStar-1

On July 1, 2009, TerreStar-1, the largest commercial telecommunication satellite ever built, is successfully launched. This satellite will be operated by TerreStar Corporation and carries transponders which will be used to provide mobile communications to North America. With a launch mass of 6,910 kilograms, it is the most massive single satellite launched into a geosynchronous transfer orbit, and the largest commercial communications satellite ever built.