| Primary satellite | Secondary satellite |
| Name | Cosmos 2142 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21231 | 30596 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:58 | 2024 Dec 22 11:35 |
| Time of closest approach (UTC) | 2024 Dec 26 22:30:54.650 |
| Minimum distance | 4.944 km |
| Height difference | 1.931 km |
| Relative speed | 13.404 km/s |
| Angle between velocity vectors | 132° |
| Geographic position | 81.4°N, 147.8°W |
| Height | 966 km |
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