Orbital Intelsat 18 User Manual
GEO
Communications
Intelsat 18
Hybrid C-band and Ku-band Commercial Communications Satellite for Intelsat
FACTS AT A GLANCE
Mission Description
The Intelsat 18 satellite built for Intelsat carries a hybrid payload and is located at an orbital slot at 180
degrees East Longitude. The satellite's C-band payload serves Eastern Asia, the Western Pacic and
North America. The Ku-band payload serves North America, French Polynesia, Cook Islands, Australia,
New Zealand, New Caledonia, Vanatu, Fiji, Tonga, Samoa and other islands.
GEOStar™ Satellites for Intelsat
Intelsat 18 is one of ten Orbital GEOStar communications satellites ordered by Intelsat.
• Galaxy 12
• Galaxy 14
• Galaxy 15
• Horizons-2
• Intelsat 11
• Intelsat 15
• Intelsat 16
• Intelsat 18
• Intelsat 23
• Intelsat 28
Coverage:
Asia Pacic Region
Mission:
C- and Ku-band communications
Customer:
Intelsat
Intelsat 18 in Orbital’s Dulles, Virginia satellite
manufacturing facility
Intelsat 18
Specications
Spacecraft
Launch Mass: 3,200 kg (7,055 lb.)
Solar Arrays: Four panels per array, UTJ Gallium
Arsenide cells
Stabilization: 3-axis stabilized; zero momentum system
Propulsion: Liquid bi-propellant transfer orbit system;
monopropellant (hydrazine) on-orbit system
Batteries: Two >4840 W-Hr capacity Li-Ion batteries
Mission Life: 15 years
Orbit: 180
Hybrid Payload
C-band
Repeater: 24 active transponders with two groups of
Antenna: 2.5 x 2.7 m single shell super-elliptical
Ku-band
Repeater: 12 active transponders with two groups of
Antenna: 2.5 x 2.7 m single shell deployable reector
°
East Longitude
16-for-12 redundant TWTAs
deployable reector; 1.45 m deck-mounted
8-for-6 TWTAs
Mission Partners
Intelsat
Intelsat is a premier global provider of video and data services via
satellite
Orbital Sciences Corporation
Prime contractor for Galaxy 12, 14 and 15; Intelsat 11, 15, 16, 18,
23 and 28; Horizons-2 for an Intelsat/SKY Perfect JSAT joint venture
Launch Launch
Launch provider
Coverage Contour Maps
C-band Coverage Areas Ku-band Coverage Areas
Northern Hemisphere
F1
Launch
Launch Vehicle: Zenit
Site: Baikonur, Kazakhstan
Date: October 5, 2011
The GEOStar™ Advantage
Orbital’s highly successful Geosynchronous Earth Orbit (GEO)
communications satellites are based on the company’s GEOStar
spacecraft platform, which is able to accommodate all types of
commercial communications payloads and is compatible with all major
commercial launchers. The company’s GEOStar product line includes
the GEOStar-2 design, which is optimized for smaller satellite missions
that can support up to 5.0 kilowatts of payload power. Orbital has also
developed the higher-power GEOStar-3 spacecraft design, delivering the
next increment of payload power for applications between 5.0 and 8.0
kilowatts, allowing Orbital to offer its innovative and reliable satellite design
to the medium-class of communications satellites.
Southern Hemisphere
Global
F2
U.S. West
Orbital Sciences Corporation
45101 Warp Drive
©2014 Orbital Sciences Corporation FS005_08_2998
•
Dulles, Virginia 20166
•
www.orbital.com
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