CUTE-1.7 + APD II

CUTE-1.7 + APD II, or CUTE-1.7+APD 2, is a Japanese nanosatellite which was launched in 2008 as a follow-up to the CUTE-1.7 + APD satellite. It was built and is operated by the Tokyo Institute of Technology.

CUTE-1.7 + APD II used a similar design to its predecessor, however it was stretched in height meaning that it no longer complied with the CubeSat form factor which the original satellite was based on. It has dimensions of 20 by 15 by 10 centimetres (7.9 by 5.9 by 3.9 in), compared to 20 by 10 by 10 centimetres (7.9 by 3.9 by 3.9 in) for CUTE-1.7 + APD, which was a standard two-unit CubeSat. The onboard computer is a Personal Digital Assistant developed by Hitachi.

The University of Toronto Institute for Aerospace Studies was contracted to launch CUTE-1.7 + APD II, subcontracting the launch to the Indian Space Research Organisation as part of the Nanosatellite Launch Service 4 (NLS-4) mission along with CanX-2, AAUSat II, COMPASS-1. Delfi-C3 and SEEDS 2. ISRO used a Polar Satellite Launch Vehicle, flight number C9, to launch NLS-4 - with the rocket flying in the Core Alone, or PSLV-CA, configuration. The rocket's primary payload was CartoSat-2A, with IMS-1, Rubin-8 and the University of Toronto's NLS-5 mission - consisting of the CanX-6 satellite - also flying aboard the rocket as secondary payloads.

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CUTE-1.7 + APD

CUTE-1.7 + APD (Cubical Tokyo Tech Engineering satellite 1.7) or CO-56 (Cubesat-Oscar-56) is an amateur radio satellite 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. It was launched on February 21 2006 on board a Japanese launcher M-V.

On March 16, 2006, the communication system malfunctioned so that it is transmitting unmodulated carrier wave and unable to communicate. The satellite decayed from orbit on 25 October 2009. A follow-up mission, CUTE-1.7 + APD II, was launched in April 2008 and remains operational.