| Telstar 4 | |
| Mission Type: | Communication |
| Operator: | AT&T |
| Cospar Id: | 1995-049A |
| Satcat: | 23670 |
| Mission Duration: | 12 years (planned) |
| Spacecraft Bus: | AS-7000 |
| Manufacturer: | Lockheed Martin |
| Launch Date: | UTC |
| Launch Rocket: | Ariane-42L H10-3 |
| Launch Site: | Kourou ELA-2 |
| Last Contact: | September 19, 2003 |
| Orbit Reference: | Geocentric |
| Orbit Longitude: | 89° W |
| Apsis: | gee |
| Programme: | Telstar |
| Previous Mission: | Telstar 402 |
| Next Mission: | Telstar 5 |
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]