FLOCK 4X-20 is a CubeSat (3U) satellite operated by PLAN and launched on January 13, 2022, from LC40 at AFETR using the Falcon 9 launch vehicle. With dimensions of 0.3 meters in length, 0.1 meters in diameter, and a span of 0.3 meters, it has a dry mass and launch mass both at 5.7 kilograms. The satellite is equipped with PS0, PS1 or PS2 imaging payload as part of its Dove 2495 payload and utilizes solar cells and batteries for power supply. Designed primarily for technology demonstration purposes, the expected lifetime varies from about one year in ISS orbit to two to three years in Sun-Synchronous Orbit (SSO). The satellite’s shape is described as a box with two panels.