| Mission type | Communications |
|---|---|
| Operator | Intelsat |
| COSPAR ID | 1974-093A |
| SATCAT no. | 07544 |
| Mission duration | 7 years (planned) |
| 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 | November 21, 1974, 23:43:59 UTC[1] |
| Rocket | Atlas SLV-3D Centaur-D1AR |
| Launch site | Cape Canaveral LC-36B |
| Orbital parameters | |
| Reference system | Geocentric[2] |
| Regime | Geostationary[2] |
| Eccentricity | 0.72739[2] |
| Perigee altitude | 289 kilometers (180 mi)[2] |
| Apogee altitude | 35,899.1 kilometers (22,306.7 mi)[2] |
| Inclination | 26°[2] |
| Period | 639.8 minutes[2] |
| Epoch | June 13, 1972[2] |
| Transponders | |
| Band | 12 IEEE C-band |
| Bandwidth | 40 MHz |
Intelsat IV | |
Intelsat IV F-8 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.