LEMUR-2-YUASA (NORAD_CAT_ID: 43560) is a CubeSat (3U) satellite manufactured by SPIREG and owned by Spire. It was launched on May 21, 2018, from Wallops Island Launch Pad 0A using an Antares 230 launch vehicle. The satellite has dimensions of 0.3 meters in length and diameter with a span of 0.3 meters. With a dry mass of 4.6 kg, it was designed to be powered by solar cells and batteries. LEMUR-2-YUASA is equipped with STRATOS (a GPS radio occultation payload), SENSE (an AIS-receiver), and AirSafe (ASD-B payload, #78 and later). It became stable on July 15, 2018. The satellite has a box shape with two panels for its equipment.