From Wikipedia, the free encyclopedia
Inmarsat-4 F3
is a communications
I-4 satellite
operated by the British satellite operator
Inmarsat
. It was launched into a
geosynchronous orbit
at 22:43 GMT on 18 August 2008,
[1]
by a
Proton-M
/
Briz-M
Enhanced
carrier rocket
. It is currently located at 97.65° West longitude, providing coverage of the Americas.
[2]
It entered service on 7 January 2009.
Like the earlier
Inmarsat-4 F1
and
F2
satellites, Inmarsat-4 F3 was constructed by
EADS Astrium
, using a
Eurostar E3000
bus
. It has a mass of 5,960 kilograms, and is expected to operate for 13 years.
[3]
It was originally slated for launch using an
Atlas V
531, but was transferred to Proton due to a large backlog of Atlas launches.
In the United States, Inmarsat ground stations are licensed to operate at 1525-1559 MHz and 1626.5-1660.5 MHz. The 1544-1545 MHz and 1645.5-1646.5 MHz bands are reserved for safety and distress communications.
[2]
References
[
edit
]
External links
[
edit
]
|
---|
January
| |
---|
February
| |
---|
March
| |
---|
April
| |
---|
May
| |
---|
June
| |
---|
July
| |
---|
August
| |
---|
September
| |
---|
October
| |
---|
November
| |
---|
December
| |
---|
Launches are separated by dots ( ? ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ).
Crewed flights
are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
|