| OPUSAT | |
| Mission Type: | Technology |
| Operator: | Osaka Prefecture University |
| Cospar Id: | 2014-009D |
| Satcat: | 39575 |
| Spacecraft Type: | 1U CubeSat |
| Manufacturer: | Osaka Prefecture University |
| Launch Mass: | 1.4kg (03.1lb) |
| Launch Date: | UTC[1] |
| Launch Rocket: | H-IIA 202 |
| Launch Site: | Tanegashima Yoshinobu 1 |
| Launch Contractor: | Mitsubishi |
| Orbit Epoch: | 28 February 2014[2] |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 383km (238miles) |
| Orbit Apoapsis: | 389km (242miles) |
| Orbit Inclination: | 65 degrees |
| Orbit Period: | 92.27 minutes |
| Apsis: | gee |
The Osaka Prefecture University Satellite, or OPUSAT was a technology demonstration cubesat built and operated by Japan's Osaka Prefecture University. It had a size of 100x100x100mm (without antennas and solar paddles) and build around a standard 1U cubesat bus. The primary satellite purpose was the space testing of the power system based on a Lithium-ion capacitor. The tests were largely successful, and it finished operation by reentry to Earth atmosphere on 24 July 2014. The OPUSAT was a development successor to “Maido Ichigo” satellite by East Osaka Craftmen Astro-Technology SOHLA in Osaka.