F-1 is a CubeSat (1U) technology demonstration satellite built by FPTU and owned by the same entity. Launched on November 20, 1998, from TYMSC Y2 launch pad using the H-IIB vehicle, it has dimensions of 0.1 meters in length, diameter, and span, with a dry mass of 1 kg and a launch mass of 1 kg as well. The satellite's power system consists of solar cells and batteries. It was designed for a short lifetime of about 3 months and is shaped like a box with a radar cross-section (RCS) of 0.0167 m^2. Its mission and purpose were to conduct technology demonstrations, though specific details on its equipment or major events are not provided in the data given.