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Ses-1, ses-2 and ses-3 – Orbital SES-3 User Manual

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Orbital Sciences Corporation

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Dulles, Virginia 20166

www.orbital.com

©2014 Orbital Sciences Corporation

FS005_07_2998

SES-1, SES-2 and SES-3

Mission Partners

SES

A leading global satellite operator providing a broad range of
communications services

Orbital Sciences Corporation

Prime contractor for the SES program

Specifications

Spacecraft

Launch Mass:

3,152 kg (6,949 lb.)

Solar Arrays:

Four panels per array, UTJ Gallium Arsenide
cells

Stabilization:

3-axis stabilized

Propulsion:

Monopropellant (hydrazine) on-orbit system

Batteries:

Two >4840 W-Hr capacity Li-Ion batteries

Mission Life:

15 years

Payload

Ku-band
Repeater:

Two groups of 16-for-12 linearized TWTAs

TWTA Power:

90 W RF

Antenna:

2.3 m dual grid shaped deployable reflector

C-band
Repeater:

Two groups of 16-for-12 SSPAs

SSPA Power:

20 W RF

Antenna:

2.3 m dual grid shaped deployable reflector

Ka-band
Repeater:

2-for-1 TWTA

TWTA Power:

39 W RF

Antenna:

Receive and transmit horns

Launch

SES-1:

Proton, April 24, 2010

SES-2:

Ariane 5, September 21, 2011

SES-3:

Proton, July 16, 2011

Coverage Contour Maps

C-band 101

°

West Longitude

Ku-band 101

°

West Longitude

This manual is related to the following products: