Launch Success
Liftoff Time (GMT)
23:07:00
Tuesday August 25, 1998
Flight V109.
ST-1 is a communications satellite owned by Singapore Telecom and Taiwan's Chunghwa Telecom Company, Ltd. It was placed launched on 25 August 1998, by an Ariane 4 rocket. The two companies jointly operate the spacecraft from control centres located in Seletar, Singapore, and Taipei, Taiwan, respectively. ST-1 carries 16 high-power Ku-band transponders and 14 medium-power C-band transponders. Weighing over 3,000 kg (6,600 lb.) at launch, ST-1 generates more than 6,500 Watts of electrical power. The satellite’s broad C-band coverage beam extends from the Middle East to Japan, including all of Southeast Asia. ST-1 also features two Ku-band spot beams: a "K1" beam that stretches from Taiwan to Singapore and from Indonesia to Malaysia and a "K2" beam centred over the Indian subcontinent. The ST-1 satellite currently delivers telephony, digital DTH broadcasting, VSAT, and other business services throughout the region. Singapore Telecom and Taiwan's Chunghwa Telecom Company are currently operating the replacement satellite ST-2 after ST-1 has reached its mission duration in 2011.
Geostationary Transfer Orbit
1 Payload
3,200 kilograms
Manufacturer
ESARocket
Diameter: 3.8m
Height: 58.72m
Payload to Orbit
GTO: 3,460 kg
Liftoff Thrust
4,334 Kilonewtons
Stages
3
Strap-ons
4
79th
Mission
5th
Mission of 1998
98th
Mission
5th
Mission of 1998
51st
Orbital launch attempt