Cosmic Ray Investigation in the Stratosphere and Space: Results from Instruments on Russian Satellites and Balloons

Table 2

Dates of launch and orbits of the satellites Prognoz—measurements out of the magnetosphere.

Satellite	Date of launch	Initial apogee altitude (10^3 km)	Orbital period (days)	Time of active operation (months)
Prognoz-1	14.04.1972	≈200	≈4	4,4
Prognoz-2	29.06.1972	≈200	≈4	5,5
Prognoz-3	15.02.1973	≈200	≈4	12,5
Prognoz-4	22.12.1975	≈200	≈4	2,5
Prognoz-5	25.11.1976	≈200	≈4	7,8
Prognoz-6	22.09.1977	≈200	≈4	5,3
Prognoz-7	30.10.1978	≈200	≈4	6,8
Prognoz-8	25.12.1980	≈200	≈4	8,8
Prognoz-9	01.07.1983	≈720	≈27	8,0
Prognoz-10	26.04.1985	≈200	≈4	9,3