Telstar 4
Mission typeCommunication
COSPAR ID1995-049A Edit this at Wikidata
SATCAT no.23670
Mission duration12 years (planned)
Spacecraft properties
ManufacturerLockheed Martin
Launch mass3,410 kilograms (7,520 lb)
Start of mission
Launch dateSeptember 24, 1995, 00:06 (1995-09-24UTC00:06Z) UTC
RocketAriane-42L H10-3
Launch siteKourou ELA-2
End of mission
Last contactSeptember 19, 2003
Orbital parameters
Reference systemGeocentric
Longitude89° W

Telstar 4 (also called Telstar 402R and Telstar 403) was a communications satellite owned by AT&T Corporation.

Telstar 4 was successfully launched into space on September 24, 1995, by means of an Ariane-42L vehicle from the Kourou Space Center, French Guiana. It had a launch mass of 3,410 kg.

Telstar 4 stopped operating on September 19, 2003, after a short circuit in the primary power bus.[1]


  1. ^ Telstar 4. TSE. Retrieved June 3, 2018.