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Intelsat III F-5 was a communications satellite intended to be operated by Intelsat. Launched towards geostationary orbit in 1969 it failed to achieve orbit.

Intelsat III F-5

Mission type	Communications
Operator	Intelsat
COSPAR ID	1969-064A
SATCAT no.	04051
Mission duration	5 years planned Failed to orbit
Spacecraft properties
Manufacturer	TRW
Launch mass	293 kilograms (646 lb)
BOL mass	151 kilograms (333 lb)
Power	183 W
Start of mission
Launch date	July 26, 1969, 02:06 (1969-07-26UTC02:06Z) UTC[1]
Rocket	Delta M
Launch site	Cape Canaveral LC-17A
End of mission
Deactivated	October 14, 1988 (1988-10-15)
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Eccentricity	0.07326
Perigee altitude	252 kilometers (157 mi)
Apogee altitude	1,301 kilometers (808 mi)
Inclination	30.3°
Period	115.3 minutes
Epoch	July 26, 1969
Intelsat III ← Intelsat III F-4 Intelsat III F-6 →

Design

The fifth of eight Intelsat III satellites to be launched, Intelsat III F-5 was built by TRW. It was a 293-kilogram (646 lb) spacecraft equipped with two transponders to be powered by body-mounted solar cells generating 183 watts of power.[2] It had a design life of five years and carried an SVM-2 apogee motor for propulsion.[3]

Launch

Intelsat III F-5 was launched by a Delta M rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch took place on July 26, 1969, with the spacecraft bound for a geosynchronous transfer orbit.[1]

Due to a failure in the third phase of the launch process, the satellite did not reach the desired orbit.

See also

• 1969 in spaceflight

References

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