Intelsat III F-7

Intelsat III F-7 was an American communications satellite owned by Intelsat. The satellite had an estimated useful life of 5 years.

Intelsat III F-7
Mission typeCommunications
OperatorIntelsat
COSPAR ID1970-032A
SATCAT no.04376
Mission duration5 years (planned)
Spacecraft properties
ManufacturerTRW Inc.
Launch mass647 kilograms (1,426 lb)
BOL mass151 kilograms (333 lb)
Power183 W
Start of mission
Launch dateApril 23, 1970, 00:46:12 (1970-04-23UTC00:46:12Z) UTC[1]
RocketThor Delta M 559/D78
Launch siteCape Canaveral LC-17A
Orbital parameters
Reference systemGeocentric[2]
RegimeGeostationary[2]
Longitude124° W (current position)[2]
Semi-major axis42,146 kilometers (26,188 mi)[2]
Perigee altitude35,760.4 kilometers (22,220.5 mi)[2]
Apogee altitude35,789.9 kilometers (22,238.8 mi)[2]
Inclination4.9°[2]
Period1,435.1 minutes[2]
EpochMay 29, 2018[2]
Intelsat III
 

Design

The seventh of eight Intelsat III satellites to be launched, Intelsat III F-7 was built by TRW. It was a 647-kilogram (1,426 lb) spacecraft equipped with two transponders to be powered by body-mounted solar cells generating 183 watts of power.[3] It had a design life of five years and carried an SVM-2 apogee motor for propulsion.

Launch

Intelsat III F-7 was launched by a Delta M rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station.

See also

References

  1. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved May 29, 2018.
  2. Real Time Satellite Tracking, N2YO.com. "INTELSAT 3 F-7". Retrieved May 29, 2018.
  3. Wade, Mark. "Intelsat 3". Encyclopedia Astronautica. Retrieved May 29, 2018.
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