| Primary satellite | Secondary satellite |
| Name | deb Agena D | COSMOS 2251 DEB |
| Spacetrack catalog number | 4615 | 34642 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:31 | 2024 Dec 23 02:30 |
| Time of closest approach (UTC) | 2024 Dec 24 03:06:33.433 |
| Minimum distance | 4.888 km |
| Height difference | 1.773 km |
| Relative speed | 13.897 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 73.3°S, 16.2°W |
| Height | 1041 km |
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