| Mission type | Communications |
|---|---|
| Operator | Intelsat |
| COSPAR ID | INT4F-6 |
| Mission duration | 7 years (planned) (Launch failure) |
| Spacecraft properties | |
| Bus | HS-312 |
| Manufacturer | Hughes Aircraft |
| Launch mass | 1,414 kilograms (3,117 lb) |
| BOL mass | 730 kilograms (1,610 lb) |
| Start of mission | |
| Launch date | February 20, 1975, 23:35 UTC[1] |
| Rocket | Atlas SLV-3D Centaur-D1 AR |
| Launch site | Cape Canaveral LC-36A |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Epoch | Planned |
Intelsat IV | |
Intelsat IV F-6 was a geostationary communication satellite built by Hughes, it was owned by Intelsat. The satellite was based on the HS-312 platform and its estimated useful life was 7 years.