| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1680 Rocket |
| Spacetrack catalog number | 35433 | 16012 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 18 02:11 | 2024 Dec 22 20:05 |
| Time of closest approach (UTC) | 2024 Dec 29 21:21:40.483 |
| Minimum distance | 1.900 km |
| Height difference | 0.946 km |
| Relative speed | 13.072 km/s |
| Angle between velocity vectors | 122° |
| Geographic position | 55.7°N, 139.1°W |
| Height | 771 km |
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