Astra 1B

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General

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.

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End of life

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

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External resources

sat-index articles

Technical data

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EIRP coverage (dBW)

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

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Specifications

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

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Ku-band (11.45-11.7 GHz)

Main transponders	16
Backup transponders	6
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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