| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 33 DEB |
| Spacetrack catalog number | 34814 | 34765 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:55 | 2024 Dec 23 00:01 |
| Time of closest approach (UTC) | 2024 Dec 27 14:54:05.996 |
| Minimum distance | 8.668 km |
| Height difference | -2.859 km |
| Relative speed | 8.632 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 73.9°S, 149.9°W |
| Height | 781 km |
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