| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | IRIDIUM 169 |
| Spacetrack catalog number | 36938 | 43926 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 22 19:55 |
| Time of closest approach (UTC) | 2024 Dec 26 10:32:42.480 |
| Minimum distance | 2.879 km |
| Height difference | 2.070 km |
| Relative speed | 3.675 km/s |
| Angle between velocity vectors | 28° |
| Geographic position | 39.5°S, 6.7°W |
| Height | 776 km |
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