| Primary satellite | Secondary satellite |
| Name | Cosmos 1850 Rocket | IRIDIUM 143 |
| Spacetrack catalog number | 18096 | 43258 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:57 | 2024 Dec 22 22:25 |
| Time of closest approach (UTC) | 2024 Dec 25 03:40:17.835 |
| Minimum distance | 4.335 km |
| Height difference | -0.891 km |
| Relative speed | 7.617 km/s |
| Angle between velocity vectors | 62° |
| Geographic position | 73.5°S, 5.5°W |
| Height | 807 km |
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