| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1814 |
| Spacetrack catalog number | 35671 | 17303 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 12:45 | 2024 Dec 22 21:01 |
| Time of closest approach (UTC) | 2024 Dec 25 22:49:54.609 |
| Minimum distance | 2.747 km |
| Height difference | -2.747 km |
| Relative speed | 13.740 km/s |
| Angle between velocity vectors | 134° |
| Geographic position | 45.9°N, 104.0°E |
| Height | 765 km |
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