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Mission/Spacecraft Characteristics

Launch vehicle Pegasus XL
Launch location Kennedy Space Center
Orbit 670 km, 28.5 deg inclination
Mission duration 28 months + 1 month IOC
Telemetry system
bulletX-band science downlink, 28 Mbps
bulletS-band command/HSK link, 2 kbps
bulletGround stations: Hawaii, Perth
bulletTDRS capable
Spacecraft Attitude Control
bullet3-axis stabilized
bullet2 gyros
bulletRGA 20 - Ring Laser Gyro
bulletHemispherical Resonating Gyro
bullet4 reaction wheels
bulletBall star tracker
bulletSun sensors
bullettorque bars + TMA
Observing timeline
bulletDayside: no science observations, solar pointed arrays
bulletTwilight: slew to science target
bulletNight: Science data collection
Solar arrays
bulletFixed, GaAs
bulletTotal area 3 m2
Consumables None
Design philosophy Single string with selected redundancy
Spacecraft Bus Orbital Sciences Corporation

 

Satellite Schematic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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The page last modified on 14 May 2002