Shin'en

Shin'en, known before launch as UNITEC-1 or UNISEC Technology Experiment Carrier 1, is a Japanese student spacecraft which was intended to make a flyby of Venus in order to study the effects of interplanetary spaceflight on spacecraft computers. In doing so, it was intended to become the first student-built spacecraft to operate beyond geocentric orbit. It was operated by UNISEC, a collaboration between several Japanese universities. It was launched on 20 May 2010 and contact was lost shortly after. Spacecraft Shin'en measures , and has a mass of . It has no attitude control or stabilisation system. Power was to be provided by solar cells attached to the outside of the spacecraft, which were to produce around 25 Watts of electricity. The primary payload of Shin'en consists of six university-built computers, which were to be tested in interplanetary space for robustness against the radiation and extremes of temperature. The spacecraft also carries a camera, and a radiation counter. In order to simplify the system and reduce cost, a low power communications system was be used. It was to broadcast a continuous wave with a data transfer rate of one bit per second. UNISEC has invited amateur radio operators to assist in collecting data from the spacecraft.