Telstar 18V (Telstar 18 Vantage / APStar 5C) is a communication satellite in the Telstar series of the Canadian satellite communications company Telesat. T18V will be equipped with C and Ku-band transponders and operate from 138° East. At 7,060 kilograms (15,560 lb), it is the second-heaviest communication satellite ever launched, weighing slightly less than its sibling Telstar 19V.
Telstar 18V was launched on a SpaceX Falcon 9 Block 5 rocket from Space Launch Complex 40 (SLC40) at Cape Canaveral Air Force Station, Space Coast, Florida, United States, on September 10th, 2018, at 12:45 AM EDT (4:45 UTC). It was deployed into a subsynchronous transfer orbit (lower than the typical geostationary transfer orbit (GTO)) approximately 32 minutes after rocket's liftoff.