|Mission type||Maritime surveillance|
|COSPAR ID||M1: 2014-033AF|
|SATCAT no.||M1: 40039|
|Mission duration||8 years, 11 months and 23 days (ongoing)|
|Start of mission|
|Launch date||19 June 2014|
|Perigee altitude||620 km (390 mi)|
|Apogee altitude||620 km (390 mi)|
Perseus-M is a pair of microsatellite developed by Russian-American company Dauria Aerospace and launched in 2014. The satellite is built in 6U Cubesat bus (0.3x0.2x0.1m), optimized for piggy-back launch. All instruments are powered by solar cells mounted on the one side of spacecraft, providing approximately 6W average power.
Perseus-M1 and Perseus-M2 were launched from Dombarovsky site 13, Russia, on 19 June 2014 by a Dnepr rocket. Telemetry beacons were received and decoded by multiple amateur ground station operators starting on 6 July 2014. 
The satellites are intended primarily for radio-frequency maritime surveillance under contract with Russian Federation.