| Official name | COSMOS 1631 |
| Alternative name | Cosmos-1631 |
| Cospar ID | 1985-018A |
| Norad ID | 15584 |
| Launch date | 1985-02-27 |
| Launch site | PKMTR |
| Launch vehicle | Kosmos-3M |
| Country/Organization | USSR / Russia |
| Type application | Radar calibration |
| RCS size | LARGE |
| Decay date | 1990-12-08 |
| Shape | Cyl |
| Mass (kg) | 991.08 |
| Diameter (m) | 2 |
| Height (m) | 2 |
| Span (m^2) | 2 |
| Contractors | Yuzhnoye |
| Propulsion | None |
| Configuration | 2 m sphere |
| Power | Solar cells, batteries |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| COSMOS 660 | 1974-044A | 1974-06-18 | PKMTR | Kosmos-3M | ||
| COSMOS 687 | 1974-076A | 1974-10-11 | PKMTR | Kosmos-3M | ||
| COSMOS 752 | 1975-069A | 1975-07-24 | PKMTR | Kosmos-3M | ||
| COSMOS 807 | 1976-022A | 1976-03-12 | PKMTR | Kosmos-3M | ||
| COSMOS 822 | 1976-049A | 1976-05-28 | PKMTR | Kosmos-3M | ||
| COSMOS 891 | 1977-006A | 1977-02-02 | PKMTR | Kosmos-3M | ||
| COSMOS 930 | 1977-067A | 1977-07-19 | PKMTR | Kosmos-3M | ||
| COSMOS 933 | 1977-070A | 1977-07-22 | PKMTR | Kosmos-3M | ||
| COSMOS 1006 | 1978-046A | 1978-05-12 | PKMTR | Kosmos-3M | ||
| COSMOS 1075 | 1979-010A | 1979-02-08 | PKMTR | Kosmos-3M | ||
| COSMOS 1169 | 1980-023A | 1980-03-27 | PKMTR | Kosmos-3M | ||
| COSMOS 1238 | 1981-003A | 1981-01-16 | PKMTR | Kosmos-3M | ||
| COSMOS 1263 | 1981-033A | 1981-04-09 | PKMTR | Kosmos-3M | ||
| COSMOS 1310 | 1981-095A | 1981-09-23 | PKMTR | Kosmos-3M | ||
| COSMOS 1450 | 1983-027A | 1983-04-06 | PKMTR | Kosmos-3M | ||
| COSMOS 1508 | 1983-111A | 1983-11-11 | PKMTR | Kosmos-3M | ||
| COSMOS 1534 | 1984-007A | 1984-01-26 | PKMTR | Kosmos-3M | ||
| COSMOS 1631 | 1985-018A | 1985-02-27 | PKMTR | Kosmos-3M | ||
| COSMOS 1788 | 1986-083A | 1986-10-27 | PKMTR | Kosmos-3M | ||
| COSMOS 1902 | 1987-103A | 1987-12-15 | PKMTR | Kosmos-3M | ||
| COSMOS 1958 | 1988-060A | 1988-07-14 | PKMTR | Kosmos-3M | ||
| COSMOS 2027 | 1989-045A | 1989-06-14 | PKMTR | Kosmos-3M | ||
| COSMOS 2098 | 1990-078A | 1990-08-28 | PKMTR | Kosmos-3M | ||
| COSMOS 2292 | 1994-061A | 1994-09-27 | PKMTR | Kosmos-3M |
