| Primary satellite | Secondary satellite |
| Name | Cosmos 841 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 9023 | 29751 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Oct 01 10:16 | 2023 Sep 30 16:13 |
| Time of closest approach (UTC) | 2023 Jun 16 18:28:36.040 |
| Minimum distance | 59.839 km |
| Height difference | 0.630 km |
| Relative speed | 14.815 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 60.2°S, 40.8°E |
| Height | 787 km |
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