Intelsat III F-4

Intelsat III F-4
Mission type	Communications
Operator	Intelsat
COSPAR ID	1969-045A
SATCAT no.	03947
Mission duration	5 years design life
Spacecraft properties
Manufacturer	TRW
Launch mass	647 kilograms (1,426 lb)
BOL mass	151 kilograms (333 lb)
Dry mass	293 kilograms (646 lb)
Start of mission
Launch date	22 May 1969, 02:00 UTC
Rocket	Delta M
Launch site	Cape Canaveral LC-17A
Contractor	NASA
End of mission
Disposal	Decommissioned
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Eccentricity	0.00471
Perigee altitude	35,276 kilometres (21,919 mi)
Apogee altitude	35,670 kilometres (22,160 mi)
Inclination	0.5 degrees
Period	1,418.9 minutes
Epoch	22 May 1969
	Intelsat III ← Intelsat III F-3 Intelsat III F-5 →

Last updated December 19, 2023

Intelsat III F-4 was a geostationary communications satellite which was built by TRW. It was owned by Intelsat, a company currently based in Luxembourg. The satellite had an estimated useful life of 5 years.

The Intelsat III F-4 was part of the Intelsat III series which consisted of eight satellites, which were used for retransmission of global commercial telecommunications, including live TV.

The satellite was stabilized by rotation with a minus antenna structure (The antenna was 34 inches high). It had a hydrazine propulsion system with four propellers and four tanks, and a passive thermal control. With solar cells producing 178W peak, nine Ahr NiCd batteries. The load consisted of two transponders that used 12 watt TWTA amplifiers for multiple access, 1500 audio circuits or four TV channels. The Intelsat III F-1 was disabled due to launch vehicle failure.

The satellite was successfully launched into space on May 22, 1969, by means of a Delta M vehicle from Cape Canaveral Air Force Station in Florida, United States. It had a launch mass of 293 kg.^[3]

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References

↑ NASA Goddard Space Flight Center. INTELSAT 3 F-4. NSSDC Master Catalog. Retrieved 19 April 2017.
↑ INTELSAT 3-F4 N2yo.com. Retrieved 19 April 2017.
↑ Krebs, Gunter. Intelsat 3. Gunter's Space Page. Retrieved 19 April 2017.

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[1] NASA Goddard Space Flight Center. INTELSAT 3 F-4. NSSDC Master Catalog. Retrieved 19 April 2017.

[2] INTELSAT 3-F4 N2yo.com. Retrieved 19 April 2017.

[3] Krebs, Gunter. Intelsat 3. Gunter's Space Page. Retrieved 19 April 2017.

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v t e Intelsat Corporation
COMSAT Intelsat Americas PanAmSat ITSO STS-49 List of Intelsat satellites
Intelsat I, II, III	Intelsat I Intelsat II F-1 II F-2 II F-3 II F-4 Intelsat III F-1 III F-2 III F-3 III F-4 III F-5 III F-6 III F-7 III F-8
Intelsat IV	Intelsat IV F-1 IV F-2 IV F-3 IV F-4 IV F-5 IV F-6 IV F-7 IV F-8 IVA F-1 IVA F-2 IVA F-3 IVA F-4 IVA F-5 IVA F-6
Intelsat V	Intelsat V F-1 V F-2 V F-3 V F-4 V F-5 V F-6 V F-7 V F-8 V F-9† VA F-10 VA F-11 VA F-12 VA F-13 VA F-14 VA F-15
Intelsat VI	Intelsat 601 602 603 604 605
Intelsat 7-10	Intelsat 701 702 703 704 705 706 707 708 709 801 802 803 804 805 806 901 902 903 904 905 906 907 10-02
ex-PanAmSat	Intelsat 1R 2 3R 4 5 6B 7 8 9 10 11 12
Recent Intelsat	Intelsat 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 (New Dawn) 29e 30 31 32e 33e 34 35e 36 37e 38 39 40e
Galaxy (Intelsat Americas)	Galaxy 3C 4R 5 9 10R 11 12 13 14 15 16 17 18 19 23 25 26 27 28 30 31 32 33 34 35 36 37
Other	APR-1 APR-2 Horizons-1 Horizons-2 Horizons-3e Intelsat K Marisat-F2 SBS 6