Telstar 19V

At 7,076 kg, Telstar 19V was the heaviest commercial communications satellite ever launched at the time, surpassing the previous record of 6,910 kg set by TerreStar-1 in 2009. Its mass required a reduced-energy ascent, placing the satellite in a transfer orbit with an apogee of only about 17,900 km rather than a conventional geostationary transfer orbit, leaving the satellite to use more of its own propulsion to reach final position.