| Name of Satellite, Alternate Names | SDS-4 (Small Demonstration Satellite-4) |
| Country of Operator/Owner | Japan |
| Operator/Owner | Japan Aerospace Exploration Agency (JAXA) |
| Users | Government |
| Purpose | Technology Development |
| Class of Orbit | LEO |
| Type of Orbit | Sun-Synchronous |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 661 |
| Apogee (km) | 673 |
| Eccentricity | 0.000852636066505613 |
| Inclination (degrees) | 98.2 |
| Period (minutes) | 98.1 |
| Launch Mass (kg.) | 50 |
| Dry Mass (kg.) | 48 |
| Power (watts) | 120 |
| Date of Launch | 17-05-2012 |
| Expected Lifetime | 2 yrs. |
| Contractor | Japan Aerospace Exploration Agency (JAXA) |
| Country of Contractor | Japan |
| Launch Site | Tanegashima Space Center |
| Launch Vehicle | H-2A |
| COSPAR Number | 2012-025C |
| NORAD Number | 38339 |
| Comments | Several technology demonstration experiments and including an experiment to monitor AIS (Automatic Information System) messages transmitted from ships at sea. |