| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | IRIDIUM 167 |
| Spacetrack catalog number | 36938 | 43931 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 23 04:04 |
| Time of closest approach (UTC) | 2024 Dec 25 00:09:35.333 |
| Minimum distance | 2.335 km |
| Height difference | -2.281 km |
| Relative speed | 7.075 km/s |
| Angle between velocity vectors | 57° |
| Geographic position | 62.2°N, 64.3°W |
| Height | 790 km |
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