Galaxy 17

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Galaxy 17
Mission type Communication[1]
Operator Intelsat
COSPAR ID 2007-016B
SATCAT № 31307
Mission duration 15 years (design life)[2]
Spacecraft properties
Bus Spacebus 3000B3
Manufacturer Alcatel Alenia Space
Launch mass 4,100 kilograms (9,000 lb)[2]
Power 9.5 kilowatts
Start of mission
Launch date 4 May 2007, 22:29 (2007-05-04UTC22:29Z) UTC
Rocket Ariane 5ECA[2]
Launch site Kourou ELA-3[1][2]
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 91° West(0°N 91°W / 0°N 91°W / 0; -91)
Perigee 35,778.1 kilometres (22,231.5 mi)[3]
Apogee 35,809.1 kilometres (22,250.7 mi)[3]
Inclination 0.0 degrees[3]
Period 1,436.1 minutes[3]
Transponders
Band 24 C band
24 Ku band
Coverage area North America

Galaxy 17 is a communications satellite owned by Intelsat to be located at 91° Westlongitude, serving the North American market. Galaxy 17 was intended to replace SBS 6. It was built by Alcatel Alenia Space (which is now Thales Alenia Space), in its Cannes Mandelieu Space Center, France.[4]

Galaxy 17 was launched by Arianespace from Kourou, French Guiana on an Ariane 5 rocket along with Astra 1L. It became operational at 74° West longitude in the geostationary orbit and replaced SBS-6 which was moved out of the geostationary orbit to a parking orbit in the Graveyard orbit. This took place on July 7, 2007. Galaxy 17 began its move to 91° West longitude when Horizons-2 was launched and placed in the 74° West longitude slot. Horizons-2 was originally slated to replace SBS-6 but the launch was delayed, possibly due to the delayed repairs of the Sea Launch vessel.

Galaxy 17 is the first primarily European satellite to cover the U.S.. Built by a French/Italian manufacturer, it was launched on a French rocket from a French spaceport. Galaxy 17 became operational again in mid July, 2008, when it took over traffic of Galaxy 11. As Galaxy 11 has effectively been replaced, any references to Galaxy 11 can now be considered references to Galaxy 17.

Galaxy 17
Amp type SSPA, 20 watts
Amp Redundancy 16 for 12
Receiver redundancy 4 for 2
Beacons C: 3700.5 MHz (H)
Ku: 12195 MHz (H)
Beacons C: 4199.5 MHz (V)
Ku: 11701 MHz (V)

References[edit]

  1. ^ a b "NSSDC Master Catalog: Galaxy 17". NASA NSSDC. 2008-08-05. Retrieved 2008-11-07. 
  2. ^ a b c d Krebs, Gunter (2008-05-31). "Galaxy 17". Skyrocket.de. Retrieved 2008-11-07. 
  3. ^ a b c d "GALAXY 17 Satellite details 2007-016B NORAD 31307". N2YO.com. Retrieved 2008-11-07. 
  4. ^ News report on launch

External links[edit]