Launch Success

Liftoff Time (GMT)

23:07:00

Tuesday August 25, 1998

Mission Details

Launch Notes

Flight V109.

ST-1

Wiki

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

Rocket

Retired
Ariane 44P

Active 1991 to 2001

European Space Agency logo

Manufacturer

ESA

Rocket

Diameter: 3.8m

Height: 58.72m

Payload to Orbit

GTO: 3,460 kg

Liftoff Thrust

4,334 Kilonewtons

Stages

3

Strap-ons

4

Launch Site

ELA-2

Guiana Space Centre, French Guiana, France

Fastest Turnaround

16 days

Stats

Ariane 4


79th

Mission

5th

Mission of 1998

European Space Agency


98th

Mission

5th

Mission of 1998

1998


51st

Orbital launch attempt