| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb NNS O-9 |
| Spacetrack catalog number | 33899 | 4555 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:32 | 2024 Dec 22 15:11 |
| Time of closest approach (UTC) | 2024 Dec 29 05:01:29.729 |
| Minimum distance | 30.178 km |
| Height difference | 1.501 km |
| Relative speed | 4.586 km/s |
| Angle between velocity vectors | 36° |
| Geographic position | 61.8°N, 112.1°W |
| Height | 733 km |
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