Astra 1G

Luxembourg

International Sat. n°:

Luxembourg spacecraft n°: 7

Launch data:

Designation	25071 / 97076A
Launch date	02 Dec 1997 - 23:10 UT
Launch site	Baikonur, LC-81/23
Launch vehicle	Proton-K/DM3 (#254)
Mission	Commercial: Direct TV
Geostationary orbit on:
Perigee / Apogee	35780 x 35791 km
Eccentricity	1.30E-04
Inclination	0.04 deg
Period	1436.08 min

Spacecraft data:

Prime contractor	Hughes
Platform	HS-601HP
Operator	SES Astra
Mass at launch	3379 kg
Dry Mass	3010 kg (BOL)
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

Location:

Begin	Position	Remarks
	19.2°E
05 Feb 2009	19 °E	manoeuvred off-station and drifting to the East
~14 Feb 2009	23 °E	relocated

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.

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: ?

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

Direct-to-home tv; multimedia; 32 Ku-band transponders; Europe

Ref.: #3(SD307), #7, #15, #225(09.01, 09.02), #226 - update: 14.04.09

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