| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 33 DEB |
| Spacetrack catalog number | 35031 | 33866 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 17:37 |
| Time of closest approach (UTC) | 2024 Dec 27 23:28:11.838 |
| Minimum distance | 0.117 km |
| Height difference | -0.001 km |
| Relative speed | 7.184 km/s |
| Angle between velocity vectors | 58° |
| Geographic position | 73.1°S, 16.2°W |
| Height | 795 km |
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