Satellite Compass G-9 (Beidou ISGO-4) of Chinese Defense Ministry

Name of Satellite, Alternate Names Compass G-9 (Beidou ISGO-4)
Country of Operator/Owner China (PR)
Operator/Owner Chinese Defense Ministry
Users Military
Purpose Navigation/Global Positioning
Class of Orbit GEO
Type of Orbit
Longitude of GEO (degrees) 0
Perigee (km) 35708
Apogee (km) 35879
Eccentricity 0.00202782027108755
Inclination (degrees) 55.2
Period (minutes) 1435.1
Launch Mass (kg.) 2300
Dry Mass (kg.)
Power (watts)
Date of Launch 26-07-2011
Expected Lifetime 8 yrs.
Contractor Space Technology Research Institute (part of CASC)
Country of Contractor China (PR)
Launch Site Xichang Satellite Launch Center
Launch Vehicle Long March 3A
COSPAR Number 2011-038A
NORAD Number 37763
Comments Part of Compass constellation.


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