| Primary satellite | Secondary satellite |
| Name | Cosmos 1850 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 18096 | 30676 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Dec 15 22:27 | 2025 Dec 15 11:03 |
| Time of closest approach (UTC) | 2024 Nov 07 12:51:11.826 |
| Minimum distance | 2306.145 km |
| Height difference | -72.327 km |
| Relative speed | 13.388 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 65.1°N, 153.3°W |
| Height | 770 km |
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