Horizons-2
Horizons-2 is a Ku band communications satellite owned by Horizons Satellite LLC, a joint venture between JSAT and Intelsat.[1] Its orbital slot is located at 74° west longitude.
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[edit] Launch
Horizons-2 was launched from the Guiana Space Centre — along with the Rascom-QAF 1 spacecraft — aboard an Arianespace Ariane 5-GS. Launch occurred at 21:42 GMT on 21 December 2007.[2]
[edit] Platform and payload
Horizons-2 was built by Orbital Sciences Corporation based on its STAR Bus satellite platform, which will generate 3.5 kilowatts of payload power. Its payload consists of 20 Ku-band transponders.
Spacecraft Specifications
Launch Mass: 2,350 kg
Solar Arrays: Three panels per array, UJT Gallium Arsenide cells
Stabilization: 3-axis stabilized; zero momentum system
Propulsion: Liquid bi-propellant transfer orbit system; monopropellant (hydrazine)
Batteries: Two >3850 W-Hr capacity Li-Ion batteries
Mission Life: 15 years (fueled for over 16 years)
Orbit: 74 degrees West Longitude
Band: Ku band
Repeater: 16 active transponders with 22-for-16 redundant 85 W TWTA's; and 4
active transponders with 6-for-4 redundant 150 W TWTA's
TWTA Power: 3.5 kW minimum EOL
Antenna: Two 2.3 m dual gridded shaped reflectors
[3]
NORAD ID: 32388
International Code: 2007-063B
Perigee: 35,784.2 km
Apogee: 35,803.5 km
Inclination: 0.0°
Period: 1,436.1 min
[4]
[edit] Coverage
The satellite will provide service to the continental United States, the Caribbean and parts of Canada.
[edit] References
- ^ "Arianespace to launch two Intelsat payloads". Arianespace. http://www.arianespace.com/site/news/releases/presrel07_04_02.html.
- ^ "Sixth successful Arianespace mission in 2007: RASCOM-QAF1 and Horizons-2 in orbit". Arianespace. http://www.arianespace.com/news-press-release/2007/12-21-07-Sixth-successful-Arianespace-mission.asp.
- ^ http://www.orbital.com/NewsInfo/Publications/Horizons2_fact.pdf
- ^ http://www.n2yo.com/satellite/?s=32388
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