FLOCK 3R-15 is a CubeSat (3U) technology satellite owned and manufactured by PLAN in the United States. It was launched on November 29, 2018, from SRILR launch site using the PSLV launch vehicle. The satellite measures 0.3 meters in length with a diameter of 0.1 meters and has a span of 0.3 meters. Its dry mass is 4.7 kilograms, which is identical to its launch mass. Equipped with PS0, PS1 or PS2 imaging payload and Dove 2107 equipment, it utilizes solar cells and batteries for power. The satellite’s shape is described as a box with two panels. It was designed for a technology mission with an expected lifetime of about 1 year in the ISS orbit and 2-3 years in SSO.