| Primary satellite | Secondary satellite |
| Name | deb Agena D | COSMOS 2251 DEB |
| Spacetrack catalog number | 4749 | 34609 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:21 | 2024 Dec 22 13:43 |
| Time of closest approach (UTC) | 2024 Dec 24 01:08:46.765 |
| Minimum distance | 3.952 km |
| Height difference | -3.909 km |
| Relative speed | 14.649 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 47.9°N, 83.2°E |
| Height | 946 km |
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