Interkosmos 20 [Yuzhnoye]
Official name INTERCOSMOS 21
Alternative name Intercosmos 21
Cospar ID 1981-011A
Norad ID 12162
Launch date 1981-02-06
Launch site PKMTR
Launch vehicle Kosmos-3M
Country/Organization International
Type application Science
Operator Interkosmos
RCS size LARGE
Decay date 1982-07-07
Shape Oct Ell
Mass (kg) 545.09
Height (m) 1.8
Width (m) 1.5
Depth (m) 1.8
Span (m^2) 1.8
Lifetime 6 months
Contractors Yuzhnoye
Configuration AUOS-Z
Power 8 deployable fixed solar arrays, solar cells, batteries

Intercosmos 20 was launched by the USSR and carried scientific instruments for testing of methods for comperhensive study of the oceans and the surface of the Earth, and testing of automatic gathering of scientific information from experimental sea and land stations. Launched under the Intercosmos program together with Czechoslovakia, GDR, Hungary and Romania.

Intecosmos 21 was a sister spacecraft to Intercosmos 20.

Satellite COSPAR Date LS Launch Vehicle Remarks
INTERCOSMOS 20 1979-096A 1979-11-01 PKMTR Kosmos-3M
INTERCOSMOS 21 1981-011A 1981-02-06 PKMTR Kosmos-3M