Relek is a Russian microsatellite with a magnetospheric science payload. The payload Relek is devoted to the examination of electron deposition.
| Name of Satellite | Relek |
| Purpose | Earth Observation |
| Contractor | NPO Lavochkin |
| Country of Contractor | Russia |
| Launch Mass (kg.) | 253 |
| Class of Orbit | LEO |
| Perigee (km) | 623 |
| Date of Launch | 08.07.2014 |
| Launch Site | Baikonur Cosmodrome |
| Launch Vehicle | Soyuz-2.1b |
| COSPAR Number | 2014-037B |
| NORAD Number | 40070 |
Relek is constructed using Lavochkin’s Karat microsatellite. Initially, the Monika payload was intended to be used with the satellite to study solar cosmic rays, but this experiment was terminated in 2012.
