| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 144 |
| Spacetrack catalog number | 35453 | 43249 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 19 15:23 | 2024 Dec 22 21:31 |
| Time of closest approach (UTC) | 2024 Dec 29 03:06:57.935 |
| Minimum distance | 4.447 km |
| Height difference | -1.740 km |
| Relative speed | 14.163 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 57.0°N, 176.2°W |
| Height | 788 km |
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