| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 2251 |
| Spacetrack catalog number | 35959 | 22675 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 20:33 |
| Time of closest approach (UTC) | 2024 Dec 29 20:30:43.463 |
| Minimum distance | 0.229 km |
| Height difference | 0.199 km |
| Relative speed | 0.336 km/s |
| Angle between velocity vectors | 3° |
| Geographic position | 74.1°N, 86.9°W |
| Height | 783 km |
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