Research (Atmospheric density) satellite, USA. Launched 2013. Split after deployment into four spacer sections that released three 0.10 m diameter aluminum spheres used as passive atmospheric density calibration probes. Cubesat 3U) form factorbus.
First Launch: 2013-09-29. Last Launch: 2013-09-29. Number: 3 . Gross mass: 1.00 kg (2.20 lb).