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| power =
| power =


| launch_date = {{start-date|January 23, 1972, 00:12:04|timezone=yes}}&nbsp;UTC<ref name="launchlog">{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|accessdate=April 21, 2017}}</ref>
| launch_date = {{start-date|January 23, 1972, 00:12:04|timezone=yes}}&nbsp;UTC<ref name="launchlog">{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|access-date=April 21, 2017}}</ref>
| launch_rocket = [[Atlas-Centaur|Atlas SLV-3D Centaur-D]]
| launch_rocket = [[Atlas-Centaur|Atlas SLV-3D Centaur-D]]
| launch_site = [[Cape Canaveral Air Force Station|Cape Canaveral]] [[Cape Canaveral Air Force Station Space Launch Complex 36|LC-36B]]
| launch_site = [[Cape Canaveral Air Force Station|Cape Canaveral]] [[Cape Canaveral Air Force Station Space Launch Complex 36|LC-36B]]
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| deactivated =
| deactivated =


| orbit_epoch = January 23, 1972<ref name="nssdc">{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraftOrbit.do?id=1972-003A|title=INTELSAT 4 F-4|first=Goddard Space Flight Center|last=NASA|work=NSSDC Master Catalog|accessdate=April 21, 2017}}</ref>
| orbit_epoch = January 23, 1972<ref name="nssdc">{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1972-003A|title=INTELSAT 4 F-4|first=Goddard Space Flight Center|last=NASA|work=NSSDC Master Catalog|access-date=April 21, 2017}}</ref>
| orbit_reference = [[geocentric orbit|Geocentric]]<ref name="nssdc"/>
| orbit_reference = [[geocentric orbit|Geocentric]]<ref name="nssdc"/>
| orbit_regime = [[Geostationary orbit|Geostationary]]<ref name="nssdc"/>
| orbit_regime = [[Geostationary orbit|Geostationary]]<ref name="nssdc"/>
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| trans_TWTA =
| trans_TWTA =
| trans_EIRP =
| trans_EIRP =
| trans_HPBW =
| trans_HPBW =

| programme = ''Intelsat IV''
| previous_mission = [[Intelsat IV F-3]]
| next_mission = [[Intelsat IV F-5]]
}}
}}

'''Intelsat IV F-4''' was a [[geostationary]] [[communication]] [[satellite]] built by [[Hughes Aircraft Company|Hughes]], it was owned by [[Intelsat]]. The satellite was based on the [[Spacebus|HS-312]] platform and its estimated useful life was 7 years.
'''Intelsat IV F-4''' was a [[geostationary]] [[communication]] [[satellite]] built by [[Hughes Aircraft Company|Hughes]], it was owned by [[Intelsat]]. The satellite was based on the [[Spacebus|HS-312]] platform and its estimated useful life was 7 years.


== History ==
== History ==
The Intelsat IV F-4 was part of the Intelsat IV series which consisted of eight communications satellites, launched from [[Cape Canaveral]] during the early 1970s, marked the fifth generation of geostationary communications satellites developed by the [[Hughes Aircraft Company]] since 1963 with the launch of Syncom II, the world's first synchronous satellite. The [[Syncom]] II was 15&nbsp;cm high and 28 inches in diameter, weighing 78 pounds in orbit. In contrast, the Intelsat IVs weighed more than [[Pound|£]] 1,300 (595&nbsp;kg) into orbit and were more than 17 feet (5.31 meters) in diameter. All seven satellites exceeded their projected life expectancies and were withdrawn from active duty, the last of which, the [[Intelsat IV F-1]] was retired in October 1987.
The Intelsat IV F-4 was part of the Intelsat IV series which consisted of eight communications satellites, launched from [[Cape Canaveral]] during the early 1970s, marked the fifth generation of geostationary communications satellites developed by the [[Hughes Aircraft Company]] since 1963 with the launch of Syncom II, the world's first synchronous satellite. The [[Syncom]] II was 15&nbsp;cm high and 28 inches in diameter, weighing 78 Lbs in orbit. In contrast, the Intelsat IVs weighed more than Pound (mass)1,300Lbs (595&nbsp;kg) into orbit and were more than {{convert|17|ft|m|abbr=off|sp=us}} in diameter. All seven satellites exceeded their projected life expectancies and were withdrawn from active duty, the last of which, the [[Intelsat IV F-1]] was retired in October 1987.


The satellite was equipped with 12 [[C band (IEEE)|C-band]] transponders. It had 6,000 two-way [[relay]] phone calls or broadcast 12 concurrent color television programs or mixed combinations of communications traffic including data and fax.
The satellite was equipped with 12 [[C band (IEEE)|C-band]] transponders. It had 6,000 two-way [[relay]] phone calls or broadcast 12 concurrent color television programs or mixed combinations of communications traffic including data and fax.
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The satellite had 12 channels of broadband communication. Each channel had a bandwidth of 40&nbsp;MHz and provided about 500 communication circuits.
The satellite had 12 channels of broadband communication. Each channel had a bandwidth of 40&nbsp;MHz and provided about 500 communication circuits.


On January 14, 1973, it was used for the broadcast of [[Elvis Presley]]'s live concert ''[[Aloha from Hawaii via Satellite]]''.<ref>{{cite book|author=Haeussler, Matthias|year=2020|page=251|title=Inventing Elvis: An American Icon in a Cold War World|publisher=Bloomsbury Publishing|isbn=978-1-350-10767-0}}</ref>
⚫
== Release ==

⚫
== Launch ==
The satellite was successfully launched into space on January 23, 1972, at 00:12:04 UTC, by means of an Atlas SLV-3D Centaur-D vehicle from the [[Cape Canaveral Air Force Station]] in [[Florida]], [[United States]]. It had a launch mass of 1,414&nbsp;kg.<ref>Krebs, Gunter. [http://space.skyrocket.de/doc_sdat/intelsat-4a.htm Intelsat-4A]. ''Gunter's Space Page''. Retrieved 21 April 2017.</ref>
The satellite was successfully launched into space on January 23, 1972, at 00:12:04 UTC, by means of an Atlas SLV-3D Centaur-D vehicle from the [[Cape Canaveral Air Force Station]] in [[Florida]], [[United States]]. It had a launch mass of 1,414&nbsp;kg.<ref>Krebs, Gunter. [http://space.skyrocket.de/doc_sdat/intelsat-4a.htm Intelsat-4A]. ''Gunter's Space Page''. Retrieved 21 April 2017.</ref>


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[[Category:Intelsat satellites]]
[[Category:Intelsat satellites]]
[[Category:Spacecraft launched in 1972]]
[[Category:Spacecraft launched in 1972]]
[[Category:Satellite launch failures]]




Latest revision as of 03:59, 28 July 2024

Intelsat IV F-4
Mission typeCommunications
OperatorIntelsat
COSPAR ID1972-003A Edit this at Wikidata
SATCAT no.05775
Mission duration7 years (planned)
Spacecraft properties
BusHS-312
ManufacturerHughes Aircraft
Launch mass1,414 kilograms (3,117 lb)
BOL mass730 kilograms (1,610 lb)
Start of mission
Launch dateJanuary 23, 1972, 00:12:04 (1972-01-23UTC00:12:04Z) UTC[1]
RocketAtlas SLV-3D Centaur-D
Launch siteCape Canaveral LC-36B
Orbital parameters
Reference systemGeocentric[2]
RegimeGeostationary[2]
Eccentricity0.71954[2]
Perigee altitude602 kilometers (374 mi)[2]
Apogee altitude36,418 kilometers (22,629 mi)[2]
Inclination21.8°[2]
Period651.3 minutes[2]
EpochJanuary 23, 1972[2]
Transponders
Band12 IEEE C-band
Bandwidth36 MHz
Intelsat IV

Intelsat IV F-4 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.

History

[edit]

The Intelsat IV F-4 was part of the Intelsat IV series which consisted of eight communications satellites, launched from Cape Canaveral during the early 1970s, marked the fifth generation of geostationary communications satellites developed by the Hughes Aircraft Company since 1963 with the launch of Syncom II, the world's first synchronous satellite. The Syncom II was 15 cm high and 28 inches in diameter, weighing 78 Lbs in orbit. In contrast, the Intelsat IVs weighed more than Pound (mass)1,300Lbs (595 kg) into orbit and were more than 17 feet (5.2 meters) in diameter. All seven satellites exceeded their projected life expectancies and were withdrawn from active duty, the last of which, the Intelsat IV F-1 was retired in October 1987.

The satellite was equipped with 12 C-band transponders. It had 6,000 two-way relay phone calls or broadcast 12 concurrent color television programs or mixed combinations of communications traffic including data and fax.

The satellite had 12 channels of broadband communication. Each channel had a bandwidth of 40 MHz and provided about 500 communication circuits.

On January 14, 1973, it was used for the broadcast of Elvis Presley's live concert Aloha from Hawaii via Satellite.[3]

Launch

[edit]

The satellite was successfully launched into space on January 23, 1972, at 00:12:04 UTC, by means of an Atlas SLV-3D Centaur-D vehicle from the Cape Canaveral Air Force Station in Florida, United States. It had a launch mass of 1,414 kg.[4]

See also

[edit]

References

[edit]
  1. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved April 21, 2017.
  2. ^ a b c d e f g h NASA, Goddard Space Flight Center. "INTELSAT 4 F-4". NSSDC Master Catalog. Retrieved April 21, 2017.
  3. ^ Haeussler, Matthias (2020). Inventing Elvis: An American Icon in a Cold War World. Bloomsbury Publishing. p. 251. ISBN 978-1-350-10767-0.
  4. ^ Krebs, Gunter. Intelsat-4A. Gunter's Space Page. Retrieved 21 April 2017.


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