| Official name | INTERCOSMOS 20 |
| Alternative name | Intercosmos 20 |
| Cospar ID | 1979-096A |
| Norad ID | 11609 |
| Launch date | 1979-11-01 |
| Launch site | PKMTR |
| Launch vehicle | Kosmos-3M |
| Country/Organization | International |
| Type application | Science |
| Operator | Interkosmos |
| RCS size | LARGE |
| Decay date | 1981-03-05 |
| 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 |
| 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 |
