| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | ARGOS Delta rocket |
| Spacetrack catalog number | 35459 | 25637 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 23 02:01 |
| Time of closest approach (UTC) | 2024 Dec 27 08:09:07.631 |
| Minimum distance | 2.000 km |
| Height difference | 1.968 km |
| Relative speed | 11.948 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 73.8°S, 176.5°E |
| Height | 805 km |
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