| Primary satellite | Secondary satellite |
| Name | Cosmos 2142 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21231 | 31891 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:58 | 2024 Dec 23 00:22 |
| Time of closest approach (UTC) | 2024 Dec 29 12:27:21.332 |
| Minimum distance | 1.181 km |
| Height difference | 1.142 km |
| Relative speed | 14.283 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 80.1°S, 169.1°E |
| Height | 1032 km |
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