S-CUBE or S3 (Shootingstar Sensing Satellite) is Japanese 3U Cubesat project for observation of meteors from low earth orbit.
S-CUBE is a partnership between Planetary Exploration Research Center of Chiba Institute of Technology (PERC/Chitech) in Narashino and Tohoku University in Sendai.
The 3U satellite bus is developed on the base of the Raiko cubesat. It features 3-axis magnetic torquers and gravity-gradient stabilization by an extendible boom.
The scientific instruments consist of a CCD camera inherited from SpriteSat and a Photomultiplier
tube (PMT) for detection at ultraviolet wavelengths.
The S-CUBE mission has following goals:
- Detect UV emission from a meteor by PMT, which is used as a trigger of a camera (minimum success)
- Take an image of meteor by a camera to estimate the meteoroid size from brightness (minimum success)
- Obtain the flux (i. e., size distribution) of meteors (full success)
- Estimate the compositions of meteors quantitatively from emission from species, such as sulfur (optional)
The satellite was delivered to the ISS by the HTV 5 cargo craft. It was deployed on 17 September 2015.