| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | SMDC ONE 2.4 |
| Spacetrack catalog number | 35703 | 39472 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 19:48 | 2024 Dec 22 09:43 |
| Time of closest approach (UTC) | 2024 Dec 27 08:13:18.820 |
| Minimum distance | 3.309 km |
| Height difference | 0.721 km |
| Relative speed | 14.799 km/s |
| Angle between velocity vectors | 157° |
| Geographic position | 45.6°S, 2.5°W |
| Height | 596 km |
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