Intelsat 28 – Orbital Intelsat 28 User Manual

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Orbital Sciences Corporation

45101 Warp Drive

•

Dulles, Virginia 20166

•

www.orbital.com

FS007_08_2998

Intelsat 28

Mission Partners

Intelsat

Intelsat is a premier global provider of video and data services via
satellite

Convergence Partners

Convergence Partners is a South African-based investment company
focused on the telecommunications, media and technology sector,
predominantly in Africa and the Middle East.

Orbital Sciences Corporation

Prime contractor for Galaxy 12, 14 and 15; Intelsat 11, 15, 16, 18
and 23; Horizons-2 for an Intelsat/SKY Perfect JSAT joint venture;
and Intelsat 28 for Intelsat and Convergence Partners

Arianespace

Launch provider

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.

Coverage Contour Maps

C-band Coverage Areas Ku-band Coverage Areas

EIRP

Specifications

Spacecraft

Launch Mass:

3,000 kg (6,614 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:

32.9

East Longitude

Hybrid Payload

C-band
Repeater:

14 active transponders with two groups of
10-for-7 redundant TWTAs

Antenna:

2.5 x 2.7 m single shell super-elliptical
deployable reflector

Ku-band
Repeater:

16 active transponders with two groups of
11-for-8 TWTAs

Antenna:

2.5 x 2.7 m single shell deployable reflector

Launch

Launch Vehicle:

Ariane 5

Site:

Kourou, French Guiana

Date:

April 22, 2011