|Organization||Tokyo Institute of Technology|
|Mission Type||Technology development|
|Launch||February 21, 2006 on a M-5 rocket|
|Launch site||Uchinoura Space Center|
|Mission duration||0.2 years|
|Launch Mass||3 kg|
|Orbital Period||94.72 minutes|
|Right ascension of the ascending node|
|Argument of perigee|
|APD||An avalanche photodiode for monitoring charged particles flux in low-Earth orbit|
CUTE-1.7 + APD (Cubical Tokyo Tech Engineering satellite 1.7) or CO-56 (Cubesat-Oscar-56) is an amateur radio nanosatellite in the form of a double CubeSat. The satellite uses commercial off-the-shelf components extensively, in particular, using the Hitachi NPD-20JWL PDA as a control computer, and using a USB hub for sensor communications. At the end of its mission, the satellite will deploy an electrodynamic tether to help it deorbit.
The follow-on project, CUTE-1.7 + APD II, has a similar architecture. It launched on 28th April, 2008 along with nine other satellites aboard an Indian Polar Satellite Launch Vehicle.