| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15333 | 32342 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 19 12:23 | 2024 Sep 18 23:48 |
| Time of closest approach (UTC) | 2024 Aug 15 23:36:54.433 |
| Minimum distance | 53.558 km |
| Height difference | 1.736 km |
| Relative speed | 13.268 km/s |
| Angle between velocity vectors | 127° |
| Geographic position | 70.9°S, 45.6°W |
| Height | 868 km |
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