| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 842 Rocket |
| Spacetrack catalog number | 29812 | 9044 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:06 | 2024 Dec 23 06:41 |
| Time of closest approach (UTC) | 2024 Dec 28 01:53:23.314 |
| Minimum distance | 4.323 km |
| Height difference | 4.313 km |
| Relative speed | 14.649 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 78.6°N, 43.7°W |
| Height | 981 km |
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