| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-985 |
| Spacetrack catalog number | 30566 | 23836 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:16 | 2024 Dec 22 20:04 |
| Time of closest approach (UTC) | 2024 Dec 24 15:52:56.466 |
| Minimum distance | 2.876 km |
| Height difference | -2.839 km |
| Relative speed | 14.009 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 80.8°S, 155.2°E |
| Height | 939 km |
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