| Primary satellite | Secondary satellite |
| Name | Cosmos 841 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 9023 | 37470 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 25 12:34 | 2023 Sep 25 11:19 |
| Time of closest approach (UTC) | 2023 Jun 02 21:48:42.472 |
| Minimum distance | 990.313 km |
| Height difference | 12.815 km |
| Relative speed | 14.612 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 55.9°N, 154.9°W |
| Height | 757 km |
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