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Astra 1B


Designation 21139 / 91015A
Launch date 2 Mar 1991
Country of origin Luxemburg
Mission Direct TV
Geostationary orbit 19.2°E
Launch vehicle Ariane V42

Should have been Satcom K3, order was cancelled and satellite reused for Astra.
Went inclined in Dec 2005.

End of life

Out of service 5 Jul 2006
Cause Moved to the junk orbit

External resources

sat-index articles

Technical data

EIRP coverage (dBW)

Horizontal polarization mode 1
Horizontal polarization mode 2
Vertical polarization mode 1
Vertical polarization mode 2


Prime contractor GE Astro Space
Platform GE-5000
Mass at launch 2580 kg
Mass in orbit 1562 kg
Payload mass 354 kg: transponders: 308 kg, antennas: 46 kg
Dimension 2.2 x 2.9 x 2.3 m
Solar array 21.5 m span
Stabilization 3-axis
DC power BOL: equinox: 2790 W, solstice: 2567 W
Payload power 2136 W
Design lifetime 10 years
Beacon 11.45350 GHz vertical
11.69650 GHz horizontal

Ku-band (11.45-11.7 GHz)

Main transponders 16
Backup transponders
Power 60 W
Bandwidth 26 MHz
Coverage Europe
EIRP max 52.5 dBW
Polarization linear H/V
Frequencies downlink: band B
uplink: 14.0-14.25 GHz

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