Launch Success
Liftoff Time (GMT)
22:04:00
Thursday May 22, 1975
Watch Replay
Official Livestream
Intelsat IV F-1 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.
Geostationary Transfer Orbit
1 Payload
1,414 kilograms
35th
Mission
2nd
Mission of 1975
45th
Orbital launch attempt