| Primary satellite | Secondary satellite |
| Name | Cosmos 2142 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21231 | 32119 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:58 | 2024 Dec 20 19:00 |
| Time of closest approach (UTC) | 2024 Dec 27 10:51:29.605 |
| Minimum distance | 2.460 km |
| Height difference | -2.227 km |
| Relative speed | 5.685 km/s |
| Angle between velocity vectors | 45° |
| Geographic position | 67.6°N, 134.4°E |
| Height | 963 km |
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