| Primary satellite | Secondary satellite |
| Name | deb Kosmos-407 | COSMOS 2251 DEB |
| Spacetrack catalog number | 5301 | 34420 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 16:53 | 2024 Dec 23 07:22 |
| Time of closest approach (UTC) | 2024 Dec 29 03:37:40.412 |
| Minimum distance | 3.688 km |
| Height difference | -3.298 km |
| Relative speed | 14.083 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 40.7°S, 109.0°W |
| Height | 639 km |
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