| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Iridium 17 |
| Spacetrack catalog number | 34913 | 24870 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 07:23 | 2024 Dec 22 21:13 |
| Time of closest approach (UTC) | 2024 Dec 29 15:36:14.782 |
| Minimum distance | 3.774 km |
| Height difference | -3.759 km |
| Relative speed | 11.780 km/s |
| Angle between velocity vectors | 104° |
| Geographic position | 72.3°N, 15.3°W |
| Height | 782 km |
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