| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 33 DEB |
| Spacetrack catalog number | 38212 | 36028 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 14:24 | 2024 Dec 22 02:43 |
| Time of closest approach (UTC) | 2024 Dec 29 19:26:00.056 |
| Minimum distance | 1.273 km |
| Height difference | 1.104 km |
| Relative speed | 8.703 km/s |
| Angle between velocity vectors | 70° |
| Geographic position | 74.0°S, 89.3°W |
| Height | 650 km |
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