Astra 1G

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General

Designation	25071 / 97076A
Launch date	2 Dec 1997
Country of origin	Luxemburg
Mission	Direct TV
Geostationary orbit	see below
Launch vehicle	Proton #254

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Location

Begin	End	Position
L: 2 Dec 1997	Feb 2009	19.2°E
Feb 2009	Jul 2010	23.5°E
Jul 2010	Jun 2014	31.5°E
Aug 2014	Feb 2016	59.9°E, inclined
Feb 2016	Jan 2017	62.8°E, inclined
Feb 2017	Jul 2018	51.1°E, inclined
Jul 2018	Aug 2019	57.2°E, inclined
Aug 2019	Dec 2020	63.2°E, inclined
Feb 2021	Jun 2023	19.4°E; inclined

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End of life

Out of service	Jun 2023
Cause	Sent to junk orbit

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

Astra 1G

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Specifications

Prime contractor	Hughes
Platform	HS-601HP
Mass at launch	3379 kg
Mass in orbit	2485 kg
Dimension	stowed: 3.3 x 3.3 x 5.5 m
Solar array	26 m span, gallium arsenide
Stabilization	3-axis
DC power	8000 W
Design lifetime	15 years
Beacon

Uses a new aerial design consisting of 2 ultra lightweight reflectors using Hughes' proprietary Contured Surface Technonlogy. Instead of conventional chemical rocket motors, Astra 1G incorporates a Xenon ion-drive for high power and reduced launch weight. But for security both standard and Xenon propulsion was installed.

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Ku-band (12.5-12.75 GHz)

Main transponders	16
Backup transponders
Power	98.5 W (TWTA)
Bandwidth	26 MHz
Coverage	Europe
EIRP max	52 dBW
Polarization	linear H/V
Frequencies	downlink: band G uplink: ?

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Ku-band, backup

Main transponders	18 for 1E or 22 for 1F
Backup transponders
Power	98.5 W (TWTA)
Bandwidth	33 MHz
Coverage	Europe
EIRP max	52 dBW
Polarization	linear H/V
Frequencies	Backup for band E & band F

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