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Sterkh 1, 2

Sterkh 1

The Sterkh satellites are to replace the Nadezhda series in the international Search and Rescue Satellite-Aided System (COSPAS-SARSAT). Unlike the Nadezhda precursors, the Sterkh series does not provide navigation services, which has been taken over by the GLONASS system. Therefore the satellites can be much smaller and were launched piggy-back on other LEO missions.

The first two satellites were launched in 2009, but both failed shortly after launch. Sterkh 1 failed to properly align its solar panels with the Sun due to a malfunction of the satellite's flight control system resulting in a loss of power. Sterkh 2 failed to properly deploy its stabilisation boom and is therefore not useable for its intended purpose.

Nation: Russia
Type / Application: Communications (COSPAS-SARSAT)
Contractors: PO Polyot
Configuration: Sterkh Bus
Power: 2 deployable fixed solar arrays, batteries
Lifetime: 5 years
Mass: 160 kg
Orbit: 918 km × 943 km, 82.95 (#1); 814 km × 819 km, 98.80 (#2)
Satellite COSPAR Date LS Launch Vehicle Remarks
Sterkh 1 (COSPAS 11) 2009-039B 21.07.2009 Pl LC-132/1 Kosmos-3M with Kosmos 2454 (Parus #98),
Sterkh 2 (COSPAS 12) 2009-049B 17.09.2009 Ba LC-31/6 Soyuz-2-1b Fregat with Meteor-M 1, Universitetsky 2, UGATUSAT, Sumbandila, BLITS, IRIS