| Primary satellite | Secondary satellite |
| Name | Cosmos 372 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 4589 | 34563 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 25 18:44 | 2021 Jan 25 19:03 |
| Time of closest approach (UTC) | 2020 Dec 08 11:00:46.527 |
| Minimum distance | 16.607 km |
| Height difference | -0.576 km |
| Relative speed | 13.174 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 54.1°S, 88.7°E |
| Height | 787 km |
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