| Primary satellite | Secondary satellite |
| Name | Cosmos 540 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 6324 | 46440 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 21 21:55 | 2023 Sep 17 22:42 |
| Time of closest approach (UTC) | 2023 Jun 07 00:03:03.829 |
| Minimum distance | 12.491 km |
| Height difference | -0.538 km |
| Relative speed | 14.944 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 42.7°S, 112.4°E |
| Height | 756 km |
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