| Primary satellite | Secondary satellite |
| Name | Cosmos 836 | FENGYUN 1C DEB |
| Spacetrack catalog number | 8923 | 29788 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:14 | 2024 Dec 23 04:10 |
| Time of closest approach (UTC) | 2024 Dec 24 16:12:10.625 |
| Minimum distance | 0.465 km |
| Height difference | -0.458 km |
| Relative speed | 14.896 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 25.5°N, 87.5°W |
| Height | 791 km |
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