| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15333 | 32456 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 19 12:23 | 2024 Sep 17 05:22 |
| Time of closest approach (UTC) | 2024 Aug 16 08:48:33.091 |
| Minimum distance | 209.916 km |
| Height difference | -7.831 km |
| Relative speed | 14.919 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 52.4°N, 59.7°W |
| Height | 861 km |
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