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Galaxy 8i

i stands for International


Designation 25086 / 97078A
Launch date 8 Dec 1997
Country of origin United States
Mission Telecommunications
Geostationary orbit 95°W
Launch vehicle Atlas 2 #112

This satellite was colocated with Galaxy 3R. It's antennas cover a larger area than the Galaxy 3R satellite, especially over the Caribbean and Central America.

Tested from 79 deg W. Went inclined in Dec 2002.

Battery problems were reported. 3 of the 4 XIPS thrusters were announced as failed in sep 2000. Insurance paid $93 million. This will lead the satellite to run out of fuel in 2002. It should be replaced by Galaxy 3C as soon as possible.

End of life

Out of service Feb 2004
Cause Technical problems. Moved to the junk orbit.

External resources

sat-index articles

Technical data


Prime contractor Hughes
Platform HS-601HP
Mass at launch 3560 kg
Mass in orbit 1962 kg
Dimension stowed: 2.7 x 3.6 x 4 m
Solar array 26 m span, gallium arsenide
Stabilization 3-axis
DC power BOL: 9900 W
EOL: 8600 W
Design lifetime 15 years

Xenon propulsion (XIPS) used for full stationkeeping.


Main transponders 32
Backup transponders 8
Power 115 W
Bandwidth 24 MHz
Coverage 2 beams: Latin America and Brazil + Central South America
EIRP max  
Polarization Circular
Frequencies Uplink: 13.750 - 14.000 GHz
Downlink: 11.450 - 11.950 GHz

16 transponders will be dedicated to South America, mainly for Portuguese programming.

Ku-band 2

Main transponders 1
Backup transponders 2
Power 50 W
EIRP max  
for telecommunication purposes

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