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Astra 4B

Also called SES 5 and Sirius 5


Designation 38652 / 12036A
Launch date 9 Jul 2012
Country of origin Luxemburg
Mission Telecommunications
Geostationary orbit 5°E
Launch vehicle Proton #389

The Ku-band transponders will be marketed by SES Astra in the African DTH market and by SES Sirius in the Nordic markets, whereas the C-band transponders will become part of the SES New Skies offering.

Object UN registered by the United Kingdom

sat-index articles

Technical data

Lyngsat transponder loading

EIRP coverage (dBW)

C-band hemi
C-band global
Ku-band Africa
Ku-band Nordic


Prime contractor SS/L
Platform LS-1300
Mass at launch 6007 kg
Dry mass  
Solar array  
Stabilization 3-axis
DC power  
Design lifetime 15 years


Main transponders 24 (28 in 36MHz equiv)
Backup transponders  
Coverage Beam 1: global
Beam 2: hemispheric: Africa, Europe, Middle East
EIRP max  
G/T max  
Polarization circular


Main transponders 36
Backup transponders  
Bandwidth 6 x 36 MHz FSS Africa
24 x 33 MHz BSS Africa
12 x 36 MHz FSS Nordic
7 x 33 MHz BSS Nordic
Coverage Beam 1: Nordic and Baltic countries
Beam 2: sub-sarahan Africa
EIRP max  
G/T max  
Polarization linear

Has a Ka-band uplink facility.

Will also carry an Egnos L-band payload for the European Commission. It will supplement the GPS signals and in the future the Glonass and Galileo signals too.

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