LEMUR-2-KAREN B (also known as Lemur-2 Karen B) is a CubeSat (3U) satellite manufactured by SPIREG and owned by SPIREL. It was launched on May 25, 2022, from Launch Complex 40 at the Air Force Eastern Test Range using a Falcon 9 launch vehicle. The satellite has dimensions of 0.3 meters in length and diameter with a span of 0.3 meters. It carries equipment including STRATOS (GPS radio occultation payload), SENSE (AIS-receiver), and AirSafe (ASD-B payload, #78 and later). The satellite’s dry mass is 4.6 kg, which matches its launch mass, and it is powered by solar cells and batteries. Its shape is described as a box with two panels.