| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | SL-16 DEB |
| Spacetrack catalog number | 35031 | 43375 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 19 17:21 |
| Time of closest approach (UTC) | 2024 Dec 29 23:16:03.552 |
| Minimum distance | 4.467 km |
| Height difference | 2.690 km |
| Relative speed | 13.293 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 49.2°N, 107.4°W |
| Height | 782 km |
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