Koltso Credit - Yuzhnoye

Calibration mission. Tentatively identified as third generation replacement for Taifun-2, perhaps to have been launched by the Tsyklon 3 launch vehicle. One possible launch in 1988 by Zenit-2.

Typical orbit: 149 x 1054 km, 64.8 deg inclinaton. Mass: 15,000 kg (33,000 lb). Associated Launch Vehicle: Zenit-2.

• 1986 October 22 - Cosmos 1786 - Launch Site: Baikonur. Launch Vehicle: Zenit-2. Mass: 15,000 kg (33,000 lb). Perigee: 149 km (92 mi). Apogee: 1,054 km (654 mi). Inclination: 64.80 deg. Period: 96.70 min.

  Radar calibration mission.

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