Inmarsat-3 F4
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]
| Mission type | Communications |
|---|---|
| Operator | Inmarsat |
| COSPAR ID | 1997-027A |
| SATCAT no. | 24819 |
| Mission duration | 13 years (planned) 19 years (achieved) |
| Spacecraft properties | |
| Bus | AS-4000 |
| Manufacturer | Lockheed-Martin Astro Space |
| Launch mass | 2,068 kg (4,559 lb) |
| Start of mission | |
| Launch date | 3 June 1997, 23:20:06 UTC |
| Rocket | Ariane 44L (V97) |
| Launch site | Centre Spatial Guyanais, ELA-2 |
| Contractor | Arianespace |
| End of mission | |
| Disposal | Graveyard orbit |
| Deactivated | 2016 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
| Longitude | 54° West |
| Transponders | |
| Coverage area | Atlantic Ocean |
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
- "PETITION FOR DECLARATORY RULING". Federal Communications Commission. Retrieved 24 March 2018.
This article incorporates text from this source, which is in the public domain. - "REQUEST FOR SPECIAL TEMPORARY AUTHORITY". Federal Communications Commission. Retrieved 24 March 2018. This article incorporates text from this source, which is in the public domain.
- Krebs, Gunter (11 December 2017). "Inmarsat-3 F1, 2, 3, 4, 5". Gunter's Space Page. Retrieved 10 October 2021.
- "ISAT List". Federal Communications Commission. Retrieved 24 March 2018. This article incorporates text from this source, which is in the public domain.