| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | SL-24 R/B |
| Spacetrack catalog number | 35671 | 31123 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 12:45 | 2024 Dec 22 16:28 |
| Time of closest approach (UTC) | 2024 Dec 25 04:22:23.365 |
| Minimum distance | 4.943 km |
| Height difference | -3.310 km |
| Relative speed | 13.755 km/s |
| Angle between velocity vectors | 133° |
| Geographic position | 73.6°N, 64.2°W |
| Height | 776 km |
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