Magnetic field measurements on the  Prognoz  satellites were carried out by  IZMIRAN's Space Magnetic Research Laboratory (SMRL) in 1977-1984. Satellites had  the orbits  with  apogees ranging from  200000  to  800000  km.  (3 - 125  Re).  Prognoz-6 provides important solar wind observations during ISEE-1/2 first orbits  on  the  day side magnetopause, at a  time  when  ISEE-3  had  not  yet  been  launched. Prognoz-7 and -9 provide observations at a later stage of the ISEE mission. It is important  also  to  note  that Prognoz-7 was launched  into  a  high  latitude  orbit,  and  provides extensive observations of the rarely explored cusp and mantle.
         The following time intervals are covered  by Prognoz :
               Prognoz-6, 26/09/1977-22/01/1978
               Prognoz-7, 11/11/1978-31/05/1979
               Prognoz-9, 03/07/1983-07/02/1984

Prognoz 6 was launched into a 488 km ? 197867 km, 65° orbit.

Prognoz 7 was launched into a 472 km ? 202627 km, 64.9° orbit.

Prognoz 9 was launched into a 480 km ? 700000 km, 65° orbit. It included the Relikt-1 experiment to investigate the anisotropy of the cosmic micropwave background at 37 GHz, using a Dicke-type modulation radiometer. During 1983 and 1984 some 15 million individual measurements were made (with 10% near the galactic plane providing some 5000 measurements per point). The entire sky was observed in 6 months. The angular resolution was 5.5°, with a temperature resolution of 0.6 mK. Additionally it observed gamma flares in deep space, and solar corpuscular and electromagnetic radiation plasma flows and magnetic fields in circumterrestrial space to determine the effects of solar activity on the interpl anetary medium and the earth's magnetosphere.

Prognoz 10, also known as Interkosmos 23, was launched into a 5975 km ? 194734 km, 65° orbit to investigate the structure of interplanetary and circumterrestrial shock waves generated by the interaction of the solar wind and the earth's magnetosphere. Special focus was the boundary and the bow shock and how particles leaked from the bow shock into the magnetosphere. It carried scientific instuments developed by scientists and specialists of the USSR and the Czechoslovak Socialist Republic as part of the Interkosmos program of international space cooperation.