Satellite Sirius 4 (Astra 4A) of SES Sirius AB

Name of Satellite, Alternate Names Sirius 4 (Astra 4A)
Country of Operator/Owner Sweden
Operator/Owner SES Sirius AB
Users Commercial
Purpose Communications
Class of Orbit GEO
Type of Orbit
Longitude of GEO (degrees) 4.85
Perigee (km) 35776
Apogee (km) 35795
Eccentricity 0.000225356121976966
Inclination (degrees) 0.04
Period (minutes) 1436.1
Launch Mass (kg.) 4400
Dry Mass (kg.)
Power (watts)
Date of Launch 17-11-2007
Expected Lifetime 15 yrs.
Contractor Lockheed Martin Commercial Space Systems
Country of Contractor USA
Launch Site Baikonur Cosmodrome
Launch Vehicle Proton M
COSPAR Number 2007-057A
NORAD Number 32299
Comments 52 Ku-band and 2 Ka-band transponders; service to Europe and sub-Saharan Africa.


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