|Mission duration||12 years (planned)|
|Launch mass||3,485 kilograms (7,683 lb)|
|Dimensions||4.08 m × 2.22 m × 2.54 m (13.4 ft × 7.3 ft × 8.3 ft)|
|Start of mission|
|Launch date||16 December 1994, 00:29:44UTC|
|Launch site||Kourou ELA-2|
|End of mission|
|Last contact||September 9, 1994|
|Decay date||November 14, 2004|
|Longitude||89° W (planned)|
|Perigee altitude||292 kilometres (181 mi)|
|Apogee altitude||19,340 kilometres (12,020 mi)|
|Epoch||September 9, 1994|
Telstar 402 was a communications satellite owned by AT&T Corporation.
Telstar 402 was successfully launched into space on September 9, 1994, by means of an Ariane-42L vehicle from the Kourou Space Center, French Guiana. It had a launch mass of 3,775 kg. The satellite was lost shortly after launch due to an explosion that occurred in the propulsion system that was caused by leakage of hot gases.