Inmarsat-3 F4

Summary

Inmarsat-3 F4
Mission typeCommunications
OperatorInmarsat
COSPAR ID1997-027A
SATCAT no.24819
Mission duration13 years (planned)
19 years (achieved)
Spacecraft properties
BusAS-4000
ManufacturerLockheed-Martin Astro Space
Launch mass2,068 kg (4,559 lb)
Start of mission
Launch date3 June 1997, 23:20:06 UTC
RocketAriane 44L (V97)
Launch siteCentre Spatial Guyanais, ELA-2
ContractorArianespace
End of mission
DisposalGraveyard orbit
Deactivated2016
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude54° West
Transponders
Coverage areaAtlantic Ocean
 

Inmarsat-3 F4 is a communications satellite operated by the British satellite operator Inmarsat. It was launched into a geosynchronous orbit on 4 June 1997. It was located at 54° West longitude whilst in service, providing coverage of the Americas as Atlantic Ocean Region-West (AOR-W). It was replaced by Inmarsat-3 F5 at 54° West in February 2016, and the now retired Inmarsat-3 F4 was moved to parking at 144° West.[1][2]

Inmarsat-3 F4 was constructed by Lockheed-Martin, using an AS-4000 satellite bus. It has a mass of 2,068 kg (4,559 lb), and is expected to operate for 13 years.[3]

In the United States, Inmarsat ground stations are licensed to operate at 1525-1559 MHz and 1626.5-1660.5 MHz via a mechanism called the ISAT List. The 1544-1545 MHz and 1645.5-1646.5 MHz bands are reserved for safety and distress communications.[4]

See also

References

  1. ^ "PETITION FOR DECLARATORY RULING". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ "REQUEST FOR SPECIAL TEMPORARY AUTHORITY". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.
  3. ^ Krebs, Gunter (11 December 2017). "Inmarsat-3 F1, 2, 3, 4, 5". Gunter's Space Page. Retrieved 10 October 2021.
  4. ^ "ISAT List". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.

External links

  • Our Satellites - Inmarsat
  • http://www.boeing.com/news/releases/2005/q4/nr_051108s.html
  • http://www.as.northropgrumman.com/products/aa_inmarsat/index.html