G.R.A.C.E.

Instruments

Facts

• G.R.A.C.E was launched on march 17, 2002.
• It was meant to stay in orbit for 5 years.
• G.R.A.C.E was sent to monitor the loss of fresh water on earth

GPS

• The G.R.A.C.E has 3 GPSs onboard
• These help locate and position the craft

USO

• The G.R.A.C.E has a ultra-stable oscillator
• This provides frequency generation for the K-band ranging system 

SCA

• The G.R.A.C.E. has a Star Camera Assembly
• This precisely measures determines the two satellite's orientation 

MTA

• G.R.A.C.E. has a Center of Mass Trim Assembly
• It precisely measures the offset between the sattilite's center of mass