The Luch-2 or Gelios satellites were the second generation of Soviet and later Russian data relay satellites. These satellites were improved versions of Luch (Altair) series and provided communications service to the Mir space station, Buran space shuttle, Soyuz-TM spacecraft, military satellites and the TsUPK ground control center.

Mission type: Communications · Orbit: Geostationary Orbit

Rocket: Proton · Provider: Khrunichev State Research and Production Space Center