Telstar 19V
Telstar 19V is a communication satellite in the Telstar series of the Canadian satellite communications company Telesat. It was built by Space Systems Loral and is based on the SSL-1300 bus. The satellite was designed to provide additional capacity over the North Atlantic region. As of 26 July 2018, Telstar 19V is the heaviest commercial communications satellite ever launched, weighing at 7,076 kg and surpassing the previous record, set by TerreStar-1, launched by Ariane 5ECA on 1 July 2009.