| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Delta 139 |
| Spacetrack catalog number | 33905 | 14461 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:00 | 2024 Dec 22 12:03 |
| Time of closest approach (UTC) | 2024 Dec 29 09:07:21.934 |
| Minimum distance | 4.038 km |
| Height difference | 2.446 km |
| Relative speed | 14.776 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 55.8°N, 30.3°E |
| Height | 823 km |
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